1604764160 has 40 divisors (see below), whose sum is σ = 3847678956. Its totient is φ = 641904640.

The previous prime is 1604764153. The next prime is 1604764199. The reversal of 1604764160 is 614674061.

It can be written as a sum of positive squares in 2 ways, for example, as 1565626624 + 39137536 = 39568^2 + 6256^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1604764160.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 310871 + ... + 315990.

Almost surely, 2^1604764160 is an apocalyptic number.

1604764160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1604764160 is an abundant number, since it is smaller than the sum of its proper divisors (2242914796).

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

1604764160 is an frugal number, since it uses more digits than its factorization.

1604764160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626884 (or 626868 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1604764160 is about 40059.5077353679. The cubic root of 1604764160 is about 1170.7668190102.

Subtracting from 1604764160 its reverse (614674061), we obtain a palindrome (990090099).

The spelling of 1604764160 in words is "one billion, six hundred four million, seven hundred sixty-four thousand, one hundred sixty".