38787867860 has 72 divisors (see below), whose sum is σ = 95818078440. Its totient is φ = 13149244416.

The previous prime is 38787867841. The next prime is 38787867869. The reversal of 38787867860 is 6876878783.

It can be written as a sum of positive squares in 4 ways, for example, as 190550416 + 38597317444 = 13804^2 + 196462^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38787867869) 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, 135137 + ... + 309576.

It is an arithmetic number, because the mean of its divisors is an integer number (1330806645).

Almost surely, 2^38787867860 is an apocalyptic number.

It is an amenable number.

38787867860 is an abundant number, since it is smaller than the sum of its proper divisors (57030210580).

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

38787867860 is a wasteful number, since it uses less digits than its factorization.

38787867860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444825 (or 444816 counting only the distinct ones).

The product of its (nonzero) digits is 151732224, while the sum is 68.

The spelling of 38787867860 in words is "thirty-eight billion, seven hundred eighty-seven million, eight hundred sixty-seven thousand, eight hundred sixty".