1604315172 has 24 divisors (see below), whose sum is σ = 3744150592. Its totient is φ = 534664800.

The previous prime is 1604315137. The next prime is 1604315191. The reversal of 1604315172 is 2715134061.

It is a super-2 number, since 2×1604315172² = 5147654342218779168, which contains 22 as substring.

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, 69897 + ... + 89967.

Almost surely, 2^1604315172 is an apocalyptic number.

1604315172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1604315172 is an abundant number, since it is smaller than the sum of its proper divisors (2139835420).

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

1604315172 is a wasteful number, since it uses less digits than its factorization.

1604315172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26739 (or 26737 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1604315172 is about 40053.9033303872. The cubic root of 1604315172 is about 1170.6576213895.

The spelling of 1604315172 in words is "one billion, six hundred four million, three hundred fifteen thousand, one hundred seventy-two".