3665445536 has 24 divisors (see below), whose sum is σ = 7218619380. Its totient is φ = 1832145408.

The previous prime is 3665445493. The next prime is 3665445547. The reversal of 3665445536 is 6355445663.

It can be written as a sum of positive squares in 2 ways, for example, as 2455797136 + 1209648400 = 49556^2 + 34780^2 .

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, 96260 + ... + 128828.

Almost surely, 2^3665445536 is an apocalyptic number.

It is an amenable number.

3665445536 is a deficient number, since it is larger than the sum of its proper divisors (3553173844).

3665445536 is a wasteful number, since it uses less digits than its factorization.

3665445536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36096 (or 36088 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 47.

The square root of 3665445536 is about 60542.9230876739. The cubic root of 3665445536 is about 1541.8504679981.

The spelling of 3665445536 in words is "three billion, six hundred sixty-five million, four hundred forty-five thousand, five hundred thirty-six".