309804919604 has 24 divisors (see below), whose sum is σ = 560021280000. Its totient is φ = 149805512640.

The previous prime is 309804919537. The next prime is 309804919609. The reversal of 309804919604 is 406919408903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309804919609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647489 + ... + 1019240.

It is an arithmetic number, because the mean of its divisors is an integer number (23334220000).

Almost surely, 2^309804919604 is an apocalyptic number.

It is an amenable number.

309804919604 is a deficient number, since it is larger than the sum of its proper divisors (250216360396).

309804919604 is a wasteful number, since it uses less digits than its factorization.

309804919604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668263 (or 1668261 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 309804919604 in words is "three hundred nine billion, eight hundred four million, nine hundred nineteen thousand, six hundred four".