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2158471801 = 19709160231
BaseRepresentation
bin1000000010100111…
…1010101001111001
312120102112201200001
42000221322221321
513410032044201
6554103313001
7104326464463
oct20051725171
95512481601
102158471801
11a084458a2
12502a4b761
13285251365
1416694b133
15c9767301
hex80a7aa79

2158471801 has 8 divisors (see below), whose sum is σ = 2275294400. Its totient is φ = 2041971120.

The previous prime is 2158471787. The next prime is 2158471829. The reversal of 2158471801 is 1081748512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2158471801 - 213 = 2158463609 is a prime.

It is a super-5 number, since 5×21584718015 (a number of 48 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158471831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66645 + ... + 93586.

It is an arithmetic number, because the mean of its divisors is an integer number (284411800).

Almost surely, 22158471801 is an apocalyptic number.

It is an amenable number.

2158471801 is a deficient number, since it is larger than the sum of its proper divisors (116822599).

2158471801 is a wasteful number, since it uses less digits than its factorization.

2158471801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160959.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 2158471801 is about 46459.3564419483. The cubic root of 2158471801 is about 1292.3558897874.

The spelling of 2158471801 in words is "two billion, one hundred fifty-eight million, four hundred seventy-one thousand, eight hundred one".

Divisors: 1 19 709 13471 160231 3044389 113603779 2158471801