13561893 has 6 divisors (see below), whose sum is σ = 19589414. Its totient is φ = 9041256.

The previous prime is 13561883. The next prime is 13561901. The reversal of 13561893 is 39816531.

It is a happy number.

13561893 is a `hidden beast` number, since 1 + 3 + 561 + 8 + 93 = 666.

13561893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13089924 + 471969 = 3618^2 + 687^2 .

It is not a de Polignac number, because 13561893 - 2⁶ = 13561829 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 (13561843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 753430 + ... + 753447.

Almost surely, 2^13561893 is an apocalyptic number.

It is an amenable number.

13561893 is a deficient number, since it is larger than the sum of its proper divisors (6027521).

13561893 is a wasteful number, since it uses less digits than its factorization.

13561893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506883 (or 1506880 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 13561893 is about 3682.6475530520. The cubic root of 13561893 is about 238.4734883443.

It can be divided in two parts, 1356 and 1893, that added together give a square (3249 = 57²).

The spelling of 13561893 in words is "thirteen million, five hundred sixty-one thousand, eight hundred ninety-three".