3656989901 has 8 divisors (see below), whose sum is σ = 3873127104. Its totient is φ = 3440966080.

The previous prime is 3656989891. The next prime is 3656989943. The reversal of 3656989901 is 1099896563.

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

It is a cyclic number.

It is not a de Polignac number, because 3656989901 - 2⁶ = 3656989837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656989961) 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, 43256 + ... + 95838.

It is an arithmetic number, because the mean of its divisors is an integer number (484140888).

Almost surely, 2^3656989901 is an apocalyptic number.

It is an amenable number.

3656989901 is a deficient number, since it is larger than the sum of its proper divisors (216137203).

3656989901 is a wasteful number, since it uses less digits than its factorization.

3656989901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56691.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 3656989901 is about 60473.0510310171. The cubic root of 3656989901 is about 1540.6639489629.

The spelling of 3656989901 in words is "three billion, six hundred fifty-six million, nine hundred eighty-nine thousand, nine hundred one".