3639347745 has 16 divisors (see below), whose sum is σ = 6352316352. Its totient is φ = 1764532160.

The previous prime is 3639347737. The next prime is 3639347783. The reversal of 3639347745 is 5477439363.

It is not a de Polignac number, because 3639347745 - 2³ = 3639347737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11028162 + ... + 11028491.

It is an arithmetic number, because the mean of its divisors is an integer number (397019772).

Almost surely, 2^3639347745 is an apocalyptic number.

It is an amenable number.

3639347745 is a deficient number, since it is larger than the sum of its proper divisors (2712968607).

3639347745 is a wasteful number, since it uses less digits than its factorization.

3639347745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22056672.

The product of its digits is 5715360, while the sum is 51.

The square root of 3639347745 is about 60327.0067631405. The cubic root of 3639347745 is about 1538.1824491025.

The spelling of 3639347745 in words is "three billion, six hundred thirty-nine million, three hundred forty-seven thousand, seven hundred forty-five".