3655945690 has 16 divisors (see below), whose sum is σ = 6581606400. Its totient is φ = 1462177360.

The previous prime is 3655945663. The next prime is 3655945721. The reversal of 3655945690 is 965495563.

It is a super-2 number, since 2×3655945690² = 26731877776459152200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67611 + ... + 109009.

It is an arithmetic number, because the mean of its divisors is an integer number (411350400).

Almost surely, 2^3655945690 is an apocalyptic number.

3655945690 is a deficient number, since it is larger than the sum of its proper divisors (2925660710).

3655945690 is a wasteful number, since it uses less digits than its factorization.

3655945690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50237.

The product of its (nonzero) digits is 4374000, while the sum is 52.

The square root of 3655945690 is about 60464.4167258727. The cubic root of 3655945690 is about 1540.5172954369.

The spelling of 3655945690 in words is "three billion, six hundred fifty-five million, nine hundred forty-five thousand, six hundred ninety".