1976831999989 has 16 divisors (see below), whose sum is σ = 2465558017920. Its totient is φ = 1539803381760.

The previous prime is 1976831999963. The next prime is 1976832000007. The reversal of 1976831999989 is 9899991386791.

It is not a de Polignac number, because 1976831999989 - 2⁵ = 1976831999957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1976831999939) 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, 4672524 + ... + 5078005.

It is an arithmetic number, because the mean of its divisors is an integer number (154097376120).

Almost surely, 2^{1976831999989} is an apocalyptic number.

It is an amenable number.

1976831999989 is a deficient number, since it is larger than the sum of its proper divisors (488726017931).

1976831999989 is a wasteful number, since it uses less digits than its factorization.

1976831999989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9753180.

The product of its digits is 4285540224, while the sum is 88.

The spelling of 1976831999989 in words is "one trillion, nine hundred seventy-six billion, eight hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred eighty-nine".