38815181496 has 96 divisors (see below), whose sum is σ = 129383960160. Its totient is φ = 10236969216.

The previous prime is 38815181423. The next prime is 38815181497. The reversal of 38815181496 is 69418151883.

It is a happy number.

38815181496 is a `hidden beast` number, since 3 + 8 + 81 + 518 + 1 + 49 + 6 = 666.

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 (38815181497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2955535 + ... + 2968638.

It is an arithmetic number, because the mean of its divisors is an integer number (1347749585).

Almost surely, 2^38815181496 is an apocalyptic number.

38815181496 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38815181496 is an abundant number, since it is smaller than the sum of its proper divisors (90568778664).

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

38815181496 is a wasteful number, since it uses less digits than its factorization.

38815181496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5924205 (or 5924198 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The spelling of 38815181496 in words is "thirty-eight billion, eight hundred fifteen million, one hundred eighty-one thousand, four hundred ninety-six".