1656316402 has 32 divisors (see below), whose sum is σ = 2707488000. Its totient is φ = 755396928.

The previous prime is 1656316399. The next prime is 1656316421. The reversal of 1656316402 is 2046136561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811299 + ... + 813337.

It is an arithmetic number, because the mean of its divisors is an integer number (84609000).

Almost surely, 2^1656316402 is an apocalyptic number.

1656316402 is a deficient number, since it is larger than the sum of its proper divisors (1051171598).

1656316402 is a wasteful number, since it uses less digits than its factorization.

1656316402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1656316402 is about 40697.8672905596. The cubic root of 1656316402 is about 1183.1716841853.

The spelling of 1656316402 in words is "one billion, six hundred fifty-six million, three hundred sixteen thousand, four hundred two".