3655949797 has 4 divisors (see below), whose sum is σ = 3814904160. Its totient is φ = 3496995436.

The previous prime is 3655949749. The next prime is 3655949819. The reversal of 3655949797 is 7979495563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3655949797 - 2⁷ = 3655949669 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 (3655946797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79477147 + ... + 79477192.

It is an arithmetic number, because the mean of its divisors is an integer number (953726040).

Almost surely, 2^3655949797 is an apocalyptic number.

It is an amenable number.

3655949797 is a deficient number, since it is larger than the sum of its proper divisors (158954363).

3655949797 is a wasteful number, since it uses less digits than its factorization.

3655949797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158954362.

The product of its digits is 64297800, while the sum is 64.

The square root of 3655949797 is about 60464.4506879869. The cubic root of 3655949797 is about 1540.5178722965.

The spelling of 3655949797 in words is "three billion, six hundred fifty-five million, nine hundred forty-nine thousand, seven hundred ninety-seven".