1639008968 has 32 divisors (see below), whose sum is σ = 3124396800. Its totient is φ = 805927488.

The previous prime is 1639008961. The next prime is 1639008977. The reversal of 1639008968 is 8698009361.

It is not an unprimeable number, because it can be changed into a prime (1639008961) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 142538 + ... + 153606.

It is an arithmetic number, because the mean of its divisors is an integer number (97637400).

Almost surely, 2^1639008968 is an apocalyptic number.

It is an amenable number.

1639008968 is a deficient number, since it is larger than the sum of its proper divisors (1485387832).

1639008968 is a wasteful number, since it uses less digits than its factorization.

1639008968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11381 (or 11377 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 1639008968 is about 40484.6757181035. The cubic root of 1639008968 is about 1179.0361198903.

The spelling of 1639008968 in words is "one billion, six hundred thirty-nine million, eight thousand, nine hundred sixty-eight".