3656365401 has 32 divisors (see below), whose sum is σ = 5425781760. Its totient is φ = 2174976000.

The previous prime is 3656365397. The next prime is 3656365403. The reversal of 3656365401 is 1045636563.

It is a happy number.

It is not a de Polignac number, because 3656365401 - 2² = 3656365397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 3656365401.

It is not an unprimeable number, because it can be changed into a prime (3656365403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1934665 + ... + 1936553.

It is an arithmetic number, because the mean of its divisors is an integer number (169555680).

Almost surely, 2^3656365401 is an apocalyptic number.

3656365401 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3656365401 is a deficient number, since it is larger than the sum of its proper divisors (1769416359).

3656365401 is a wasteful number, since it uses less digits than its factorization.

3656365401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 3656365401 is about 60467.8873535367. The cubic root of 3656365401 is about 1540.5762448277.

The spelling of 3656365401 in words is "three billion, six hundred fifty-six million, three hundred sixty-five thousand, four hundred one".