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38801853693 = 324311317077
BaseRepresentation
bin100100001000110001…
…010100110011111101
310201011011112101202100
4210020301110303331
51113431233304233
625454134215313
72542355212611
oct441061246375
9121134471670
1038801853693
11155016a8a89
12762a7b4539
133874a89a55
141c41401341
151021715813
hex908c54cfd

38801853693 has 6 divisors (see below), whose sum is σ = 56047122014. Its totient is φ = 25867902456.

The previous prime is 38801853667. The next prime is 38801853697. The reversal of 38801853693 is 39635810883.

It is a happy number.

38801853693 is a `hidden beast` number, since 3 + 8 + 8 + 0 + 18 + 536 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37565417124 + 1236436569 = 193818^2 + 35163^2 .

It is not a de Polignac number, because 38801853693 - 210 = 38801852669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38801853697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2155658530 + ... + 2155658547.

Almost surely, 238801853693 is an apocalyptic number.

It is an amenable number.

38801853693 is a deficient number, since it is larger than the sum of its proper divisors (17245268321).

38801853693 is a wasteful number, since it uses less digits than its factorization.

38801853693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311317083 (or 4311317080 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 38801853693 in words is "thirty-eight billion, eight hundred one million, eight hundred fifty-three thousand, six hundred ninety-three".

Divisors: 1 3 9 4311317077 12933951231 38801853693