38157661692 has 36 divisors (see below), whose sum is σ = 97045847080. Its totient is φ = 12641186592.

The previous prime is 38157661691. The next prime is 38157661747. The reversal of 38157661692 is 29616675183.

38157661692 is a `hidden beast` number, since 3 + 8 + 1 + 576 + 6 + 1 + 69 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×38157661692² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38157661691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3245467 + ... + 3257202.

Almost surely, 2^38157661692 is an apocalyptic number.

It is an amenable number.

38157661692 is an abundant number, since it is smaller than the sum of its proper divisors (58888185388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38157661692 is a wasteful number, since it uses less digits than its factorization.

38157661692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502842 (or 6502837 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 38157661692 in words is "thirty-eight billion, one hundred fifty-seven million, six hundred sixty-one thousand, six hundred ninety-two".