1164790409 has 8 divisors (see below), whose sum is σ = 1185919560. Its totient is φ = 1143801216.

The previous prime is 1164790399. The next prime is 1164790433. The reversal of 1164790409 is 9040974611.

It can be written as a sum of positive squares in 4 ways, for example, as 125372809 + 1039417600 = 11197^2 + 32240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1164790409 - 2⁸ = 1164790153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1164790499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18122 + ... + 51555.

It is an arithmetic number, because the mean of its divisors is an integer number (148239945).

Almost surely, 2^1164790409 is an apocalyptic number.

It is an amenable number.

1164790409 is a deficient number, since it is larger than the sum of its proper divisors (21129151).

1164790409 is an equidigital number, since it uses as much as digits as its factorization.

1164790409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69979.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1164790409 is about 34129.0259017160. The cubic root of 1164790409 is about 1052.1619578535.

The spelling of 1164790409 in words is "one billion, one hundred sixty-four million, seven hundred ninety thousand, four hundred nine".