1606326904 has 32 divisors (see below), whose sum is σ = 3706909920. Its totient is φ = 635469696.

The previous prime is 1606326893. The next prime is 1606326929. The reversal of 1606326904 is 4096236061.

It is a happy number.

It is a super-2 number, since 2×1606326904² = 5160572245028450432, which contains 22 as substring.

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, 1102519 + ... + 1103974.

It is an arithmetic number, because the mean of its divisors is an integer number (115840935).

Almost surely, 2^1606326904 is an apocalyptic number.

1606326904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1606326904 is an abundant number, since it is smaller than the sum of its proper divisors (2100583016).

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

1606326904 is a wasteful number, since it uses less digits than its factorization.

1606326904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206519 (or 2206515 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1606326904 is about 40079.0082711636. The cubic root of 1606326904 is about 1171.1467326216.

The spelling of 1606326904 in words is "one billion, six hundred six million, three hundred twenty-six thousand, nine hundred four".