9992642631 has 16 divisors (see below), whose sum is σ = 13906015200. Its totient is φ = 6376647680.

The previous prime is 9992642623. The next prime is 9992642669. The reversal of 9992642631 is 1362462999.

It is a cyclic number.

It is not a de Polignac number, because 9992642631 - 2³ = 9992642623 is a prime.

It is a super-2 number, since 2×9992642631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9992642531) 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, 759906 + ... + 772943.

It is an arithmetic number, because the mean of its divisors is an integer number (869125950).

Almost surely, 2^9992642631 is an apocalyptic number.

9992642631 is a deficient number, since it is larger than the sum of its proper divisors (3913372569).

9992642631 is a wasteful number, since it uses less digits than its factorization.

9992642631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532946.

The product of its digits is 1259712, while the sum is 51.

The square root of 9992642631 is about 99963.2063861499. The cubic root of 9992642631 is about 2153.9061946995.

The spelling of 9992642631 in words is "nine billion, nine hundred ninety-two million, six hundred forty-two thousand, six hundred thirty-one".