1633665968 has 20 divisors (see below), whose sum is σ = 3452976168. Its totient is φ = 742575360.

The previous prime is 1633665911. The next prime is 1633666003. The reversal of 1633665968 is 8695663361.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640921 + ... + 4641272.

Almost surely, 2^1633665968 is an apocalyptic number.

It is an amenable number.

1633665968 is an abundant number, since it is smaller than the sum of its proper divisors (1819310200).

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

1633665968 is a wasteful number, since it uses less digits than its factorization.

1633665968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282212 (or 9282206 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 53.

The square root of 1633665968 is about 40418.6339205075. The cubic root of 1633665968 is about 1177.7535465236.

The spelling of 1633665968 in words is "one billion, six hundred thirty-three million, six hundred sixty-five thousand, nine hundred sixty-eight".