2631163988 has 12 divisors (see below), whose sum is σ = 4605137460. Its totient is φ = 1315410432.

The previous prime is 2631163973. The next prime is 2631164021. The reversal of 2631163988 is 8893611362.

It can be written as a sum of positive squares in 2 ways, for example, as 2221425424 + 409738564 = 47132^2 + 20242^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4583 + ... + 72686.

It is an arithmetic number, because the mean of its divisors is an integer number (383761455).

Almost surely, 2^2631163988 is an apocalyptic number.

It is an amenable number.

2631163988 is a deficient number, since it is larger than the sum of its proper divisors (1973973472).

2631163988 is a wasteful number, since it uses less digits than its factorization.

2631163988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85786 (or 85784 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 2631163988 is about 51294.8729211799. The cubic root of 2631163988 is about 1380.5409886217.

The spelling of 2631163988 in words is "two billion, six hundred thirty-one million, one hundred sixty-three thousand, nine hundred eighty-eight".