1164475813 has 4 divisors (see below), whose sum is σ = 1164596940. Its totient is φ = 1164354688.

The previous prime is 1164475783. The next prime is 1164475841. The reversal of 1164475813 is 3185744611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 884348644 + 280127169 = 29738^2 + 16737^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164475813 - 2²¹ = 1162378661 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164475853) 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, 44770 + ... + 65827.

It is an arithmetic number, because the mean of its divisors is an integer number (291149235).

Almost surely, 2^1164475813 is an apocalyptic number.

It is an amenable number.

1164475813 is a deficient number, since it is larger than the sum of its proper divisors (121127).

1164475813 is a wasteful number, since it uses less digits than its factorization.

1164475813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121126.

The product of its digits is 80640, while the sum is 40.

The square root of 1164475813 is about 34124.4166690070. The cubic root of 1164475813 is about 1052.0672238580.

The spelling of 1164475813 in words is "one billion, one hundred sixty-four million, four hundred seventy-five thousand, eight hundred thirteen".