3640745079 has 24 divisors (see below), whose sum is σ = 5354228880. Its totient is φ = 2383540992.

The previous prime is 3640745071. The next prime is 3640745083. The reversal of 3640745079 is 9705470463.

3640745079 is a `hidden beast` number, since 36 + 40 + 74 + 507 + 9 = 666.

3640745079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3640745079 - 2³ = 3640745071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640745071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94432 + ... + 127274.

It is an arithmetic number, because the mean of its divisors is an integer number (223092870).

Almost surely, 2^3640745079 is an apocalyptic number.

3640745079 is a deficient number, since it is larger than the sum of its proper divisors (1713483801).

3640745079 is a wasteful number, since it uses less digits than its factorization.

3640745079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33071 (or 33068 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 3640745079 is about 60338.5869821294. The cubic root of 3640745079 is about 1538.3792865361.

The spelling of 3640745079 in words is "three billion, six hundred forty million, seven hundred forty-five thousand, seventy-nine".