3129801868 has 6 divisors (see below), whose sum is σ = 5477153276. Its totient is φ = 1564900932.

The previous prime is 3129801839. The next prime is 3129801919. The reversal of 3129801868 is 8681089213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391225230 + ... + 391225237.

Almost surely, 2^3129801868 is an apocalyptic number.

It is an amenable number.

3129801868 is a deficient number, since it is larger than the sum of its proper divisors (2347351408).

3129801868 is a wasteful number, since it uses less digits than its factorization.

3129801868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782450471 (or 782450469 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 3129801868 is about 55944.6321643105. The cubic root of 3129801868 is about 1462.7573257294.

The spelling of 3129801868 in words is "three billion, one hundred twenty-nine million, eight hundred one thousand, eight hundred sixty-eight".