1304863616 has 32 divisors (see below), whose sum is σ = 2970896880. Its totient is φ = 559226880.

The previous prime is 1304863601. The next prime is 1304863643. The reversal of 1304863616 is 6163684031.

1304863616 = T₁₉₃₀₅ + T₁₉₃₀₆ + ... + T₁₉₃₁₁.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1304863616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727265 + ... + 729056.

Almost surely, 2^1304863616 is an apocalyptic number.

1304863616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1304863616 is an abundant number, since it is smaller than the sum of its proper divisors (1666033264).

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

1304863616 is an equidigital number, since it uses as much as digits as its factorization.

1304863616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456342 (or 1456330 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1304863616 is about 36122.8960079338. The cubic root of 1304863616 is about 1092.7522445899.

The spelling of 1304863616 in words is "one billion, three hundred four million, eight hundred sixty-three thousand, six hundred sixteen".