1604943736 has 16 divisors (see below), whose sum is σ = 3282839640. Its totient is φ = 729519840.

The previous prime is 1604943731. The next prime is 1604943779. The reversal of 1604943736 is 6373494061.

It is a junction number, because it is equal to n+sod(n) for n = 1604943692 and 1604943701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604943731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9118911 + ... + 9119086.

Almost surely, 2^1604943736 is an apocalyptic number.

It is an amenable number.

1604943736 is an abundant number, since it is smaller than the sum of its proper divisors (1677895904).

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

1604943736 is a wasteful number, since it uses less digits than its factorization.

1604943736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18238014 (or 18238010 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 1604943736 is about 40061.7490382035. The cubic root of 1604943736 is about 1170.8104876866.

The spelling of 1604943736 in words is "one billion, six hundred four million, nine hundred forty-three thousand, seven hundred thirty-six".