2640313269 has 24 divisors (see below), whose sum is σ = 4165080192. Its totient is φ = 1598425920.

The previous prime is 2640313177. The next prime is 2640313289. The reversal of 2640313269 is 9623130462.

2640313269 is a `hidden beast` number, since 2 + 640 + 3 + 1 + 3 + 2 + 6 + 9 = 666.

It is not a de Polignac number, because 2640313269 - 2⁷ = 2640313141 is a prime.

It is a super-2 number, since 2×2640313269² = 13942508316914932722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640313289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78532 + ... + 106994.

It is an arithmetic number, because the mean of its divisors is an integer number (173545008).

Almost surely, 2^2640313269 is an apocalyptic number.

It is an amenable number.

2640313269 is a deficient number, since it is larger than the sum of its proper divisors (1524766923).

2640313269 is a wasteful number, since it uses less digits than its factorization.

2640313269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29417 (or 29414 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2640313269 is about 51383.9787190521. The cubic root of 2640313269 is about 1382.1393110465.

The spelling of 2640313269 in words is "two billion, six hundred forty million, three hundred thirteen thousand, two hundred sixty-nine".