38218012992 has 126 divisors (see below), whose sum is σ = 115614639738. Its totient is φ = 12068780544.

The previous prime is 38218012991. The next prime is 38218013023. The reversal of 38218012992 is 29921081283.

It is a happy number.

38218012992 is a `hidden beast` number, since 382 + 180 + 1 + 2 + 9 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32279152896 + 5938860096 = 179664^2 + 77064^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38218012991) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 116038 + ... + 299834.

Almost surely, 2^38218012992 is an apocalyptic number.

38218012992 is a gapful number since it is divisible by the number (32) 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 38218012992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57807319869).

38218012992 is an abundant number, since it is smaller than the sum of its proper divisors (77396626746).

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

38218012992 is a wasteful number, since it uses less digits than its factorization.

38218012992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183853 (or 183821 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 38218012992 in words is "thirty-eight billion, two hundred eighteen million, twelve thousand, nine hundred ninety-two".