13994518 has 4 divisors (see below), whose sum is σ = 20991780. Its totient is φ = 6997258.

The previous prime is 13994503. The next prime is 13994531. The reversal of 13994518 is 81549931.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×13994518³ (a number of 22 digits) contains 333 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498628 + ... + 3498631.

It is an arithmetic number, because the mean of its divisors is an integer number (5247945).

Almost surely, 2^13994518 is an apocalyptic number.

13994518 is a deficient number, since it is larger than the sum of its proper divisors (6997262).

13994518 is an equidigital number, since it uses as much as digits as its factorization.

13994518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997261.

The product of its digits is 38880, while the sum is 40.

The square root of 13994518 is about 3740.9247519831. The cubic root of 13994518 is about 240.9827642156.

The spelling of 13994518 in words is "thirteen million, nine hundred ninety-four thousand, five hundred eighteen".