38413685916 has 144 divisors (see below), whose sum is σ = 103117254240. Its totient is φ = 12500075520.

The previous prime is 38413685909. The next prime is 38413685923. The reversal of 38413685916 is 61958631483.

38413685916 is a `hidden beast` number, since 3 + 8 + 41 + 3 + 6 + 8 + 591 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (38413685909) and next prime (38413685923).

It is a super-2 number, since 2×38413685916² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8120640 + ... + 8125368.

Almost surely, 2^38413685916 is an apocalyptic number.

38413685916 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38413685916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51558627120).

38413685916 is an abundant number, since it is smaller than the sum of its proper divisors (64703568324).

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

38413685916 is a wasteful number, since it uses less digits than its factorization.

38413685916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946 (or 4932 counting only the distinct ones).

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

The spelling of 38413685916 in words is "thirty-eight billion, four hundred thirteen million, six hundred eighty-five thousand, nine hundred sixteen".