2640442264 has 16 divisors (see below), whose sum is σ = 4976484120. Its totient is φ = 1313379840.

The previous prime is 2640442249. The next prime is 2640442283. The reversal of 2640442264 is 4622440462.

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 3 ways as a sum of consecutive naturals, for example, 853522 + ... + 856609.

Almost surely, 2^2640442264 is an apocalyptic number.

It is an amenable number.

2640442264 is a deficient number, since it is larger than the sum of its proper divisors (2336041856).

2640442264 is a wasteful number, since it uses less digits than its factorization.

2640442264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710330 (or 1710326 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

The square root of 2640442264 is about 51385.2339101419. The cubic root of 2640442264 is about 1382.1618192540.

The spelling of 2640442264 in words is "two billion, six hundred forty million, four hundred forty-two thousand, two hundred sixty-four".