3665275818 has 16 divisors (see below), whose sum is σ = 7342176576. Its totient is φ = 1219821120.

The previous prime is 3665275799. The next prime is 3665275841. The reversal of 3665275818 is 8185725663.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480271 + ... + 487842.

It is an arithmetic number, because the mean of its divisors is an integer number (458886036).

Almost surely, 2^3665275818 is an apocalyptic number.

3665275818 is an abundant number, since it is smaller than the sum of its proper divisors (3676900758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665275818 is a wasteful number, since it uses less digits than its factorization.

3665275818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968749.

The product of its digits is 2419200, while the sum is 51.

The square root of 3665275818 is about 60541.5214377703. The cubic root of 3665275818 is about 1541.8266706348.

The spelling of 3665275818 in words is "three billion, six hundred sixty-five million, two hundred seventy-five thousand, eight hundred eighteen".