13649901365 has 8 divisors (see below), whose sum is σ = 16389300408. Its totient is φ = 10913641920.

The previous prime is 13649901311. The next prime is 13649901383. The reversal of 13649901365 is 56310994631.

It can be written as a sum of positive squares in 4 ways, for example, as 1438988356 + 12210913009 = 37934^2 + 110503^2 .

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

It is not a de Polignac number, because 13649901365 - 2²⁴ = 13633124149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775322 + ... + 792731.

It is an arithmetic number, because the mean of its divisors is an integer number (2048662551).

Almost surely, 2^13649901365 is an apocalyptic number.

It is an amenable number.

13649901365 is a deficient number, since it is larger than the sum of its proper divisors (2739399043).

13649901365 is a wasteful number, since it uses less digits than its factorization.

13649901365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569799.

The product of its (nonzero) digits is 524880, while the sum is 47.

The spelling of 13649901365 in words is "thirteen billion, six hundred forty-nine million, nine hundred one thousand, three hundred sixty-five".