3649637881913 has 8 divisors (see below), whose sum is σ = 3864340092960. Its totient is φ = 3434937629760.

The previous prime is 3649637881867. The next prime is 3649637881933. The reversal of 3649637881913 is 3191887369463.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3649637881913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649637881933) 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, 5305778 + ... + 5954036.

It is an arithmetic number, because the mean of its divisors is an integer number (483042511620).

Almost surely, 2^{3649637881913} is an apocalyptic number.

It is an amenable number.

3649637881913 is a deficient number, since it is larger than the sum of its proper divisors (214702211047).

3649637881913 is a wasteful number, since it uses less digits than its factorization.

3649637881913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979447.

The product of its digits is 141087744, while the sum is 68.

The spelling of 3649637881913 in words is "three trillion, six hundred forty-nine billion, six hundred thirty-seven million, eight hundred eighty-one thousand, nine hundred thirteen".