1976872868 has 12 divisors (see below), whose sum is σ = 3461268720. Its totient is φ = 987938952.

The previous prime is 1976872861. The next prime is 1976872907. The reversal of 1976872868 is 8682786791.

It is a self number, because there is not a number n which added to its sum of digits gives 1976872868.

It is not an unprimeable number, because it can be changed into a prime (1976872861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115358 + ... + 131381.

It is an arithmetic number, because the mean of its divisors is an integer number (288439060).

Almost surely, 2^1976872868 is an apocalyptic number.

It is an amenable number.

1976872868 is a deficient number, since it is larger than the sum of its proper divisors (1484395852).

1976872868 is a wasteful number, since it uses less digits than its factorization.

1976872868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248746 (or 248744 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 62.

The square root of 1976872868 is about 44462.0385047739. The cubic root of 1976872868 is about 1255.0458162244.

The spelling of 1976872868 in words is "one billion, nine hundred seventy-six million, eight hundred seventy-two thousand, eight hundred sixty-eight".