2640654131 has 8 divisors (see below), whose sum is σ = 2732827680. Its totient is φ = 2548555072.

The previous prime is 2640654113. The next prime is 2640654169. The reversal of 2640654131 is 1314560462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640654131 - 2¹⁸ = 2640391987 is a prime.

It is a super-2 number, since 2×2640654131² = 13946108479134730322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640654031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59066 + ... + 93648.

It is an arithmetic number, because the mean of its divisors is an integer number (341603460).

Almost surely, 2^2640654131 is an apocalyptic number.

2640654131 is a deficient number, since it is larger than the sum of its proper divisors (92173549).

2640654131 is a wasteful number, since it uses less digits than its factorization.

2640654131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37245.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2640654131 is about 51387.2954240637. The cubic root of 2640654131 is about 1382.1987861226.

The spelling of 2640654131 in words is "two billion, six hundred forty million, six hundred fifty-four thousand, one hundred thirty-one".