2640364741 has 16 divisors (see below), whose sum is σ = 3333982464. Its totient is φ = 2037429504.

The previous prime is 2640364717. The next prime is 2640364757. The reversal of 2640364741 is 1474630462.

It is a cyclic number.

It is not a de Polignac number, because 2640364741 - 2²¹ = 2638267589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2640364741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640364841) 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, 479610 + ... + 485083.

It is an arithmetic number, because the mean of its divisors is an integer number (208373904).

Almost surely, 2^2640364741 is an apocalyptic number.

It is an amenable number.

2640364741 is a deficient number, since it is larger than the sum of its proper divisors (693617723).

2640364741 is a wasteful number, since it uses less digits than its factorization.

2640364741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964740.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 2640364741 is about 51384.4795731162. The cubic root of 2640364741 is about 1382.1482924318.

The spelling of 2640364741 in words is "two billion, six hundred forty million, three hundred sixty-four thousand, seven hundred forty-one".