38171495812 has 6 divisors (see below), whose sum is σ = 66800117678. Its totient is φ = 19085747904.

The previous prime is 38171495749. The next prime is 38171495837. The reversal of 38171495812 is 21859417183.

It can be written as a sum of positive squares in only one way, i.e., 31735284736 + 6436211076 = 178144^2 + 80226^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4771436973 + ... + 4771436980.

Almost surely, 2^38171495812 is an apocalyptic number.

It is an amenable number.

38171495812 is a deficient number, since it is larger than the sum of its proper divisors (28628621866).

38171495812 is a wasteful number, since it uses less digits than its factorization.

38171495812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9542873957 (or 9542873955 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The spelling of 38171495812 in words is "thirty-eight billion, one hundred seventy-one million, four hundred ninety-five thousand, eight hundred twelve".