3947152816 has 20 divisors (see below), whose sum is σ = 7721860432. Its totient is φ = 1954414656.

The previous prime is 3947152813. The next prime is 3947152819. The reversal of 3947152816 is 6182517493.

It is an interprime number because it is at equal distance from previous prime (3947152813) and next prime (3947152819).

It is not an unprimeable number, because it can be changed into a prime (3947152813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195911 + ... + 1199206.

Almost surely, 2^3947152816 is an apocalyptic number.

It is an amenable number.

3947152816 is a deficient number, since it is larger than the sum of its proper divisors (3774707616).

3947152816 is a wasteful number, since it uses less digits than its factorization.

3947152816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395228 (or 2395222 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 3947152816 is about 62826.3703869641. The cubic root of 3947152816 is about 1580.3792306599.

The spelling of 3947152816 in words is "three billion, nine hundred forty-seven million, one hundred fifty-two thousand, eight hundred sixteen".