13974918 has 32 divisors (see below), whose sum is σ = 31155840. Its totient is φ = 4152960.

The previous prime is 13974913. The next prime is 13974929. The reversal of 13974918 is 81947931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13974918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13974911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668 + ... + 5543.

It is an arithmetic number, because the mean of its divisors is an integer number (973620).

Almost surely, 2^13974918 is an apocalyptic number.

13974918 is an abundant number, since it is smaller than the sum of its proper divisors (17180922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13974918 is a wasteful number, since it uses less digits than its factorization.

13974918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7252.

The product of its digits is 54432, while the sum is 42.

The square root of 13974918 is about 3738.3041609799. The cubic root of 13974918 is about 240.8702089768.

It can be divided in two parts, 139 and 74918, that added together give a palindrome (75057).

The spelling of 13974918 in words is "thirteen million, nine hundred seventy-four thousand, nine hundred eighteen".