5131649940 has 48 divisors (see below), whose sum is σ = 14373844800. Its totient is φ = 1367942400.

The previous prime is 5131649923. The next prime is 5131649969. The reversal of 5131649940 is 499461315.

It is a super-2 number, since 2×5131649940² = 52667662213404007200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 5131649892 and 5131649901.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 168915 + ... + 196965.

It is an arithmetic number, because the mean of its divisors is an integer number (299455100).

Almost surely, 2^5131649940 is an apocalyptic number.

It is an amenable number.

5131649940 is an abundant number, since it is smaller than the sum of its proper divisors (9242194860).

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

5131649940 is a wasteful number, since it uses less digits than its factorization.

5131649940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31112 (or 31110 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 5131649940 is about 71635.5354555265. The cubic root of 5131649940 is about 1724.8540031867.

The spelling of 5131649940 in words is "five billion, one hundred thirty-one million, six hundred forty-nine thousand, nine hundred forty".