1564145793 has 12 divisors (see below), whose sum is σ = 2582082048. Its totient is φ = 893797560.

The previous prime is 1564145789. The next prime is 1564145839. The reversal of 1564145793 is 3975414651.

1564145793 is a `hidden beast` number, since 1 + 5 + 64 + 14 + 579 + 3 = 666.

1564145793 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1564145793 - 2² = 1564145789 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1564145773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12413793 + ... + 12413918.

It is an arithmetic number, because the mean of its divisors is an integer number (215173504).

Almost surely, 2^1564145793 is an apocalyptic number.

It is an amenable number.

1564145793 is a deficient number, since it is larger than the sum of its proper divisors (1017936255).

1564145793 is a wasteful number, since it uses less digits than its factorization.

1564145793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24827724 (or 24827721 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 1564145793 is about 39549.2830908476. The cubic root of 1564145793 is about 1160.8044838098.

The spelling of 1564145793 in words is "one billion, five hundred sixty-four million, one hundred forty-five thousand, seven hundred ninety-three".