3655945959 has 8 divisors (see below), whose sum is σ = 4874885760. Its totient is φ = 2437151736.

The previous prime is 3655945949. The next prime is 3655945981. The reversal of 3655945959 is 9595495563.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3655945959 - 2⁵ = 3655945927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655945949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54982 + ... + 101660.

It is an arithmetic number, because the mean of its divisors is an integer number (609360720).

Almost surely, 2^3655945959 is an apocalyptic number.

3655945959 is a deficient number, since it is larger than the sum of its proper divisors (1218939801).

3655945959 is a wasteful number, since it uses less digits than its factorization.

3655945959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72789.

The product of its digits is 32805000, while the sum is 60.

The square root of 3655945959 is about 60464.4189503215. The cubic root of 3655945959 is about 1540.5173332201.

The spelling of 3655945959 in words is "three billion, six hundred fifty-five million, nine hundred forty-five thousand, nine hundred fifty-nine".