2665149604 has 36 divisors (see below), whose sum is σ = 5066718804. Its totient is φ = 1226090112.

The previous prime is 2665149581. The next prime is 2665149623. The reversal of 2665149604 is 4069415662.

It can be written as a sum of positive squares in 6 ways, for example, as 1791828900 + 873320704 = 42330^2 + 29552^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208074 + ... + 220510.

It is an arithmetic number, because the mean of its divisors is an integer number (140742189).

Almost surely, 2^2665149604 is an apocalyptic number.

It is an amenable number.

2665149604 is a deficient number, since it is larger than the sum of its proper divisors (2401569200).

2665149604 is a wasteful number, since it uses less digits than its factorization.

2665149604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12784 (or 12769 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2665149604 is about 51625.0869636071. The cubic root of 2665149604 is about 1386.4595306922.

The spelling of 2665149604 in words is "two billion, six hundred sixty-five million, one hundred forty-nine thousand, six hundred four".