1604402051 has 16 divisors (see below), whose sum is σ = 1883640000. Its totient is φ = 1365928704.

The previous prime is 1604402027. The next prime is 1604402071. The reversal of 1604402051 is 1502044061.

It is not a de Polignac number, because 1604402051 - 2⁶ = 1604401987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604402071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35411 + ... + 66803.

It is an arithmetic number, because the mean of its divisors is an integer number (117727500).

Almost surely, 2^1604402051 is an apocalyptic number.

1604402051 is a deficient number, since it is larger than the sum of its proper divisors (279237949).

1604402051 is an equidigital number, since it uses as much as digits as its factorization.

1604402051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31563 (or 31549 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1604402051 is about 40054.9878417158. The cubic root of 1604402051 is about 1170.6787526754.

The spelling of 1604402051 in words is "one billion, six hundred four million, four hundred two thousand, fifty-one".