1372643402 has 8 divisors (see below), whose sum is σ = 2217347076. Its totient is φ = 633527712.

The previous prime is 1372643383. The next prime is 1372643453. The reversal of 1372643402 is 2043462731.

It can be written as a sum of positive squares in 2 ways, for example, as 1357111921 + 15531481 = 36839^2 + 3941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26396963 + ... + 26397014.

Almost surely, 2^1372643402 is an apocalyptic number.

1372643402 is a deficient number, since it is larger than the sum of its proper divisors (844703674).

1372643402 is a wasteful number, since it uses less digits than its factorization.

1372643402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52793992.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 1372643402 is about 37049.2024475561. The cubic root of 1372643402 is about 1111.3544060037.

The spelling of 1372643402 in words is "one billion, three hundred seventy-two million, six hundred forty-three thousand, four hundred two".