1304985633 has 16 divisors (see below), whose sum is σ = 1993892736. Its totient is φ = 743702400.

The previous prime is 1304985611. The next prime is 1304985653. The reversal of 1304985633 is 3365894031.

It is not a de Polignac number, because 1304985633 - 2⁵ = 1304985601 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1304985653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75468 + ... + 91133.

It is an arithmetic number, because the mean of its divisors is an integer number (124618296).

Almost surely, 2^1304985633 is an apocalyptic number.

It is an amenable number.

1304985633 is a deficient number, since it is larger than the sum of its proper divisors (688907103).

1304985633 is a wasteful number, since it uses less digits than its factorization.

1304985633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166984.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 1304985633 is about 36124.5848834281. The cubic root of 1304985633 is about 1092.7863043933.

The spelling of 1304985633 in words is "one billion, three hundred four million, nine hundred eighty-five thousand, six hundred thirty-three".