2640425188 has 12 divisors (see below), whose sum is σ = 4665606400. Its totient is φ = 1307394792.

The previous prime is 2640425153. The next prime is 2640425209. The reversal of 2640425188 is 8815240462.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2640425188.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3203988 + ... + 3204811.

Almost surely, 2^2640425188 is an apocalyptic number.

It is an amenable number.

2640425188 is a deficient number, since it is larger than the sum of its proper divisors (2025181212).

2640425188 is a wasteful number, since it uses less digits than its factorization.

2640425188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408906 (or 6408904 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 2640425188 is about 51385.0677531907. The cubic root of 2640425188 is about 1382.1588397221.

The spelling of 2640425188 in words is "two billion, six hundred forty million, four hundred twenty-five thousand, one hundred eighty-eight".