3880991860 has 24 divisors (see below), whose sum is σ = 8153316360. Its totient is φ = 1551780864.

The previous prime is 3880991843. The next prime is 3880991861. The reversal of 3880991860 is 681990883.

It can be written as a sum of positive squares in 4 ways, for example, as 1695204 + 3879296656 = 1302^2 + 62284^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3880991798 and 3880991807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3880991861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14992 + ... + 89368.

It is an arithmetic number, because the mean of its divisors is an integer number (339721515).

Almost surely, 2^3880991860 is an apocalyptic number.

It is an amenable number.

3880991860 is an abundant number, since it is smaller than the sum of its proper divisors (4272324500).

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

3880991860 is a wasteful number, since it uses less digits than its factorization.

3880991860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76995 (or 76993 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 3880991860 is about 62297.6071771621. The cubic root of 3880991860 is about 1571.4994883304.

The spelling of 3880991860 in words is "three billion, eight hundred eighty million, nine hundred ninety-one thousand, eight hundred sixty".