38485639400 has 48 divisors (see below), whose sum is σ = 96362126700. Its totient is φ = 14210081280.

The previous prime is 38485639391. The next prime is 38485639457. The reversal of 38485639400 is 493658483.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8501946436 + 29983692964 = 92206^2 + 173158^2 .

It is a super-2 number, since 2×38485639400² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7398485 + ... + 7403684.

Almost surely, 2^38485639400 is an apocalyptic number.

It is an amenable number.

38485639400 is an abundant number, since it is smaller than the sum of its proper divisors (57876487300).

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

38485639400 is a wasteful number, since it uses less digits than its factorization.

38485639400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14802198 (or 14802189 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 38485639400 in words is "thirty-eight billion, four hundred eighty-five million, six hundred thirty-nine thousand, four hundred".