3656937145 has 16 divisors (see below), whose sum is σ = 4418111952. Its totient is φ = 2905726720.

The previous prime is 3656937139. The next prime is 3656937161. The reversal of 3656937145 is 5417396563.

It can be written as a sum of positive squares in 8 ways, for example, as 576576144 + 3080361001 = 24012^2 + 55501^2 .

It is not a de Polignac number, because 3656937145 - 2⁵ = 3656937113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393935 + ... + 1396555.

It is an arithmetic number, because the mean of its divisors is an integer number (276131997).

Almost surely, 2^3656937145 is an apocalyptic number.

It is an amenable number.

3656937145 is a deficient number, since it is larger than the sum of its proper divisors (761174807).

3656937145 is a wasteful number, since it uses less digits than its factorization.

3656937145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412.

The product of its digits is 2041200, while the sum is 49.

The square root of 3656937145 is about 60472.6148351467. The cubic root of 3656937145 is about 1540.6565403508.

The spelling of 3656937145 in words is "three billion, six hundred fifty-six million, nine hundred thirty-seven thousand, one hundred forty-five".