2641668531 has 16 divisors (see below), whose sum is σ = 3549868800. Its totient is φ = 1747317600.

The previous prime is 2641668527. The next prime is 2641668571. The reversal of 2641668531 is 1358661462.

It is not a de Polignac number, because 2641668531 - 2² = 2641668527 is a prime.

It is a super-2 number, since 2×2641668531² = 13956825255351395922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2641668571) 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, 466986 + ... + 472608.

It is an arithmetic number, because the mean of its divisors is an integer number (221866800).

Almost surely, 2^2641668531 is an apocalyptic number.

2641668531 is a deficient number, since it is larger than the sum of its proper divisors (908200269).

2641668531 is a wasteful number, since it uses less digits than its factorization.

2641668531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826.

The product of its digits is 207360, while the sum is 42.

The square root of 2641668531 is about 51397.1646202395. The cubic root of 2641668531 is about 1382.3757527477.

The spelling of 2641668531 in words is "two billion, six hundred forty-one million, six hundred sixty-eight thousand, five hundred thirty-one".