13511889 has 24 divisors (see below), whose sum is σ = 21116160. Its totient is φ = 8293248.

The previous prime is 13511867. The next prime is 13511893. The reversal of 13511889 is 98811531.

13511889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13511889 - 2⁸ = 13511633 is a prime.

It is a super-2 number, since 2×13511889² = 365142288696642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13511989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6252 + ... + 8130.

It is an arithmetic number, because the mean of its divisors is an integer number (879840).

Almost surely, 2^13511889 is an apocalyptic number.

It is an amenable number.

13511889 is a deficient number, since it is larger than the sum of its proper divisors (7604271).

13511889 is a wasteful number, since it uses less digits than its factorization.

13511889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1946 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 13511889 is about 3675.8521461016. The cubic root of 13511889 is about 238.1800358458.

It can be divided in two parts, 13511 and 889, that added together give a square (14400 = 120²).

The spelling of 13511889 in words is "thirteen million, five hundred eleven thousand, eight hundred eighty-nine".