2640626195 has 16 divisors (see below), whose sum is σ = 3190762848. Its totient is φ = 2097861120.

The previous prime is 2640626189. The next prime is 2640626207. The reversal of 2640626195 is 5916260462.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2640626195 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819227 + ... + 822443.

It is an arithmetic number, because the mean of its divisors is an integer number (199422678).

Almost surely, 2^2640626195 is an apocalyptic number.

2640626195 is a deficient number, since it is larger than the sum of its proper divisors (550136653).

2640626195 is a wasteful number, since it uses less digits than its factorization.

2640626195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 2640626195 is about 51387.0236051866. The cubic root of 2640626195 is about 1382.1939119210.

The spelling of 2640626195 in words is "two billion, six hundred forty million, six hundred twenty-six thousand, one hundred ninety-five".