3613642565 has 32 divisors (see below), whose sum is σ = 4838378496. Its totient is φ = 2572922880.

The previous prime is 3613642531. The next prime is 3613642567. The reversal of 3613642565 is 5652463163.

It is a de Polignac number, because none of the positive numbers 2^k-3613642565 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 (3613642567) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 567077 + ... + 573413.

It is an arithmetic number, because the mean of its divisors is an integer number (151199328).

Almost surely, 2^3613642565 is an apocalyptic number.

It is an amenable number.

3613642565 is a deficient number, since it is larger than the sum of its proper divisors (1224735931).

3613642565 is a wasteful number, since it uses less digits than its factorization.

3613642565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669.

The product of its digits is 388800, while the sum is 41.

The square root of 3613642565 is about 60113.5805371798. The cubic root of 3613642565 is about 1534.5524292202.

The spelling of 3613642565 in words is "three billion, six hundred thirteen million, six hundred forty-two thousand, five hundred sixty-five".