1565163164 has 12 divisors (see below), whose sum is σ = 2755840584. Its totient is φ = 777780144.

The previous prime is 1565163161. The next prime is 1565163181. The reversal of 1565163164 is 4613615651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565163161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199627 + ... + 1200930.

It is an arithmetic number, because the mean of its divisors is an integer number (229653382).

Almost surely, 2^1565163164 is an apocalyptic number.

It is an amenable number.

1565163164 is a deficient number, since it is larger than the sum of its proper divisors (1190677420).

1565163164 is a wasteful number, since it uses less digits than its factorization.

1565163164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400724 (or 2400722 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 1565163164 is about 39562.1430663204. The cubic root of 1565163164 is about 1161.0561041872.

The spelling of 1565163164 in words is "one billion, five hundred sixty-five million, one hundred sixty-three thousand, one hundred sixty-four".