1564120156 has 12 divisors (see below), whose sum is σ = 2898222768. Its totient is φ = 736056512.

The previous prime is 1564120121. The next prime is 1564120169. The reversal of 1564120156 is 6510214651.

It is a congruent number.

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, 11500816 + ... + 11500951.

It is an arithmetic number, because the mean of its divisors is an integer number (241518564).

Almost surely, 2^1564120156 is an apocalyptic number.

It is an amenable number.

1564120156 is a deficient number, since it is larger than the sum of its proper divisors (1334102612).

1564120156 is a wasteful number, since it uses less digits than its factorization.

1564120156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23001788 (or 23001786 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1564120156 is about 39548.9589749212. The cubic root of 1564120156 is about 1160.7981417524.

The spelling of 1564120156 in words is "one billion, five hundred sixty-four million, one hundred twenty thousand, one hundred fifty-six".