1604113402 has 8 divisors (see below), whose sum is σ = 2406389076. Its totient is φ = 801983712.

The previous prime is 1604113391. The next prime is 1604113439. The reversal of 1604113402 is 2043114061.

It can be written as a sum of positive squares in 2 ways, for example, as 1469112241 + 135001161 = 38329^2 + 11619^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2803 + ... + 56710.

Almost surely, 2^1604113402 is an apocalyptic number.

1604113402 is a deficient number, since it is larger than the sum of its proper divisors (802275674).

1604113402 is a wasteful number, since it uses less digits than its factorization.

1604113402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72992.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1604113402 is about 40051.3845203883. The cubic root of 1604113402 is about 1170.6085426101.

Adding to 1604113402 its reverse (2043114061), we get a palindrome (3647227463).

The spelling of 1604113402 in words is "one billion, six hundred four million, one hundred thirteen thousand, four hundred two".