13489918 has 24 divisors (see below), whose sum is σ = 22175208. Its totient is φ = 6151392.

The previous prime is 13489913. The next prime is 13489919. The reversal of 13489918 is 81998431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13489913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35980 + ... + 36352.

It is an arithmetic number, because the mean of its divisors is an integer number (923967).

Almost surely, 2^13489918 is an apocalyptic number.

13489918 is a deficient number, since it is larger than the sum of its proper divisors (8685290).

13489918 is a wasteful number, since it uses less digits than its factorization.

13489918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 495 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 13489918 is about 3672.8623715026. The cubic root of 13489918 is about 238.0508683022.

The spelling of 13489918 in words is "thirteen million, four hundred eighty-nine thousand, nine hundred eighteen".