3934045665 has 80 divisors (see below), whose sum is σ = 8098326720. Its totient is φ = 1806986880.

The previous prime is 3934045657. The next prime is 3934045697. The reversal of 3934045665 is 5665404393.

It is not a de Polignac number, because 3934045665 - 2³ = 3934045657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3934045665.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 61407 + ... + 107883.

It is an arithmetic number, because the mean of its divisors is an integer number (101229084).

Almost surely, 2^3934045665 is an apocalyptic number.

It is an amenable number.

3934045665 is an abundant number, since it is smaller than the sum of its proper divisors (4164281055).

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

3934045665 is a wasteful number, since it uses less digits than its factorization.

3934045665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46524 (or 46515 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The square root of 3934045665 is about 62721.9711504669. The cubic root of 3934045665 is about 1578.6279903002.

The spelling of 3934045665 in words is "three billion, nine hundred thirty-four million, forty-five thousand, six hundred sixty-five".