2631681976 has 32 divisors (see below), whose sum is σ = 6151985280. Its totient is φ = 1025330400.

The previous prime is 2631681971. The next prime is 2631681979. The reversal of 2631681976 is 6791861362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631681971) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2135490 + ... + 2136721.

It is an arithmetic number, because the mean of its divisors is an integer number (192249540).

Almost surely, 2^2631681976 is an apocalyptic number.

It is an amenable number.

2631681976 is an abundant number, since it is smaller than the sum of its proper divisors (3520303304).

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

2631681976 is a wasteful number, since it uses less digits than its factorization.

2631681976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272235 (or 4272231 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 2631681976 is about 51299.9217933127. The cubic root of 2631681976 is about 1380.6315767603.

The spelling of 2631681976 in words is "two billion, six hundred thirty-one million, six hundred eighty-one thousand, nine hundred seventy-six".