1609793904 has 60 divisors (see below), whose sum is σ = 4228395288. Its totient is φ = 527742720.

The previous prime is 1609793879. The next prime is 1609793917. The reversal of 1609793904 is 4093979061.

It is a super-2 number, since 2×1609793904² = 5182872826711122432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 174102 + ... + 183114.

Almost surely, 2^1609793904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1609793904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2114197644).

1609793904 is an abundant number, since it is smaller than the sum of its proper divisors (2618601384).

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

1609793904 is an equidigital number, since it uses as much as digits as its factorization.

1609793904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9146 (or 9079 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 1609793904 is about 40122.2370263673. The cubic root of 1609793904 is about 1171.9887048654.

The spelling of 1609793904 in words is "one billion, six hundred nine million, seven hundred ninety-three thousand, nine hundred four".