1164042609 has 4 divisors (see below), whose sum is σ = 1552056816. Its totient is φ = 776028404.

The previous prime is 1164042599. The next prime is 1164042613. The reversal of 1164042609 is 9062404611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1164042609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1164042609.

It is not an unprimeable number, because it can be changed into a prime (1164042679) 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, 194007099 + ... + 194007104.

It is an arithmetic number, because the mean of its divisors is an integer number (388014204).

Almost surely, 2^1164042609 is an apocalyptic number.

It is an amenable number.

1164042609 is a deficient number, since it is larger than the sum of its proper divisors (388014207).

1164042609 is an equidigital number, since it uses as much as digits as its factorization.

1164042609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388014206.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1164042609 is about 34118.0686587034. The cubic root of 1164042609 is about 1051.9367456196.

The spelling of 1164042609 in words is "one billion, one hundred sixty-four million, forty-two thousand, six hundred nine".