1604166872 has 32 divisors (see below), whose sum is σ = 3750001920. Its totient is φ = 624999840.

The previous prime is 1604166841. The next prime is 1604166887. The reversal of 1604166872 is 2786614061.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301468 + ... + 1302699.

It is an arithmetic number, because the mean of its divisors is an integer number (117187560).

Almost surely, 2^1604166872 is an apocalyptic number.

It is an amenable number.

1604166872 is an abundant number, since it is smaller than the sum of its proper divisors (2145835048).

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

1604166872 is a wasteful number, since it uses less digits than its factorization.

1604166872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604191 (or 2604187 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1604166872 is about 40052.0520323241. The cubic root of 1604166872 is about 1170.6215491185.

The spelling of 1604166872 in words is "one billion, six hundred four million, one hundred sixty-six thousand, eight hundred seventy-two".