2640109924 has 27 divisors (see below), whose sum is σ = 4834131897. Its totient is φ = 1261530864.

The previous prime is 2640109921. The next prime is 2640109931. The reversal of 2640109924 is 4299010462.

It is a happy number.

The square root of 2640109924 is 51382.

It is a perfect power (a square), and thus also a powerful number.

2640109924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 2523253824 = 10810^2 + 50232^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640109921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2363014 + ... + 2364130.

Almost surely, 2^2640109924 is an apocalyptic number.

2640109924 is the 51382-nd square number.

It is an amenable number.

2640109924 is a deficient number, since it is larger than the sum of its proper divisors (2194021973).

2640109924 is an equidigital number, since it uses as much as digits as its factorization.

2640109924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The cubic root of 2640109924 is about 1382.1038280937.

The spelling of 2640109924 in words is "two billion, six hundred forty million, one hundred nine thousand, nine hundred twenty-four".