1165312404 has 36 divisors (see below), whose sum is σ = 2964427284. Its totient is φ = 385961472.

The previous prime is 1165312399. The next prime is 1165312409. The reversal of 1165312404 is 4042135611.

It is a happy number.

1165312404 is a `hidden beast` number, since 1 + 1 + 653 + 1 + 2 + 4 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1165312399) and next prime (1165312409).

It can be written as a sum of positive squares in 2 ways, for example, as 614940804 + 550371600 = 24798^2 + 23460^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165312409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97437 + ... + 108740.

Almost surely, 2^1165312404 is an apocalyptic number.

It is an amenable number.

1165312404 is an abundant number, since it is smaller than the sum of its proper divisors (1799114880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165312404 is a wasteful number, since it uses less digits than its factorization.

1165312404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206344 (or 206339 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1165312404 is about 34136.6724213125. The cubic root of 1165312404 is about 1052.3191080880.

The spelling of 1165312404 in words is "one billion, one hundred sixty-five million, three hundred twelve thousand, four hundred four".