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8385948053 = 72192474077
BaseRepresentation
bin1111100111101011…
…10110100110010101
3210122102122022002122
413303311312212111
5114133300314203
63504043545325
7414545245100
oct76365664625
923572568078
108385948053
11361371598a
12176052b245
13a384a4752
14597a51737
15341335538
hex1f3d76995

8385948053 has 18 divisors (see below), whose sum is σ = 10295551926. Its totient is φ = 6809627664.

The previous prime is 8385948047. The next prime is 8385948059. The reversal of 8385948053 is 3508495838.

It is an interprime number because it is at equal distance from previous prime (8385948047) and next prime (8385948059).

It can be written as a sum of positive squares in only one way, i.e., 8324372644 + 61575409 = 91238^2 + 7847^2 .

It is not a de Polignac number, because 8385948053 - 28 = 8385947797 is a prime.

It is a super-2 number, since 2×83859480532 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8385947986 and 8385948004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8385948059) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 219350 + ... + 254727.

It is an arithmetic number, because the mean of its divisors is an integer number (571975107).

Almost surely, 28385948053 is an apocalyptic number.

It is an amenable number.

8385948053 is a deficient number, since it is larger than the sum of its proper divisors (1909603873).

8385948053 is a wasteful number, since it uses less digits than its factorization.

8385948053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474129 (or 474103 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The square root of 8385948053 is about 91574.8221565295. The cubic root of 8385948053 is about 2031.6585613102.

The spelling of 8385948053 in words is "eight billion, three hundred eighty-five million, nine hundred forty-eight thousand, fifty-three".

Divisors: 1 7 19 49 133 361 931 2527 17689 474077 3318539 9007463 23229773 63052241 171141797 441365687 1197992579 8385948053