3634644013 has 32 divisors (see below), whose sum is σ = 5167169280. Its totient is φ = 2460533760.

The previous prime is 3634643981. The next prime is 3634644053. The reversal of 3634644013 is 3104464363.

It is not a de Polignac number, because 3634644013 - 2⁵ = 3634643981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3634644013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634644053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89778 + ... + 123811.

It is an arithmetic number, because the mean of its divisors is an integer number (161474040).

Almost surely, 2^3634644013 is an apocalyptic number.

It is an amenable number.

3634644013 is a deficient number, since it is larger than the sum of its proper divisors (1532525267).

3634644013 is a wasteful number, since it uses less digits than its factorization.

3634644013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213637.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 3634644013 is about 60288.0088657769. The cubic root of 3634644013 is about 1537.5194807323.

The spelling of 3634644013 in words is "three billion, six hundred thirty-four million, six hundred forty-four thousand, thirteen".