3961818372 has 24 divisors (see below), whose sum is σ = 9250141600. Its totient is φ = 1319763456.

The previous prime is 3961818361. The next prime is 3961818391. The reversal of 3961818372 is 2738181693.

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, 85597 + ... + 123492.

Almost surely, 2^3961818372 is an apocalyptic number.

It is an amenable number.

3961818372 is an abundant number, since it is smaller than the sum of its proper divisors (5288323228).

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

3961818372 is a wasteful number, since it uses less digits than its factorization.

3961818372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210675 (or 210673 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 3961818372 is about 62942.9771459851. The cubic root of 3961818372 is about 1582.3340991926.

The spelling of 3961818372 in words is "three billion, nine hundred sixty-one million, eight hundred eighteen thousand, three hundred seventy-two".