3861660972 has 24 divisors (see below), whose sum is σ = 9703661296. Its totient is φ = 1188203328.

The previous prime is 3861660949. The next prime is 3861660989. The reversal of 3861660972 is 2790661683.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12376963 + ... + 12377274.

Almost surely, 2^3861660972 is an apocalyptic number.

It is an amenable number.

3861660972 is an abundant number, since it is smaller than the sum of its proper divisors (5842000324).

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

3861660972 is a wasteful number, since it uses less digits than its factorization.

3861660972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24754257 (or 24754255 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 3861660972 is about 62142.2639754942. The cubic root of 3861660972 is about 1568.8859761777.

The spelling of 3861660972 in words is "three billion, eight hundred sixty-one million, six hundred sixty thousand, nine hundred seventy-two".