1916311564 has 6 divisors (see below), whose sum is σ = 3353545244. Its totient is φ = 958155780.

The previous prime is 1916311559. The next prime is 1916311571. The reversal of 1916311564 is 4651136191.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239538942 + ... + 239538949.

Almost surely, 2^1916311564 is an apocalyptic number.

It is an amenable number.

1916311564 is a deficient number, since it is larger than the sum of its proper divisors (1437233680).

1916311564 is a wasteful number, since it uses less digits than its factorization.

1916311564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479077895 (or 479077893 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 1916311564 is about 43775.6960424389. The cubic root of 1916311564 is about 1242.0966013358.

The spelling of 1916311564 in words is "one billion, nine hundred sixteen million, three hundred eleven thousand, five hundred sixty-four".