1372971664 has 10 divisors (see below), whose sum is σ = 2660132630. Its totient is φ = 686485824.

The previous prime is 1372971647. The next prime is 1372971671. The reversal of 1372971664 is 4661792731.

It can be written as a sum of positive squares in only one way, i.e., 857318400 + 515653264 = 29280^2 + 22708^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42905349 + ... + 42905380.

It is an arithmetic number, because the mean of its divisors is an integer number (266013263).

Almost surely, 2^1372971664 is an apocalyptic number.

It is an amenable number.

1372971664 is a deficient number, since it is larger than the sum of its proper divisors (1287160966).

1372971664 is an equidigital number, since it uses as much as digits as its factorization.

1372971664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85810737 (or 85810731 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The square root of 1372971664 is about 37053.6322645972. The cubic root of 1372971664 is about 1111.4429908811.

The spelling of 1372971664 in words is "one billion, three hundred seventy-two million, nine hundred seventy-one thousand, six hundred sixty-four".