13993118 has 4 divisors (see below), whose sum is σ = 20989680. Its totient is φ = 6996558.

The previous prime is 13993087. The next prime is 13993127. The reversal of 13993118 is 81139931.

13993118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81139931 = 439 ⋅184829.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498278 + ... + 3498281.

It is an arithmetic number, because the mean of its divisors is an integer number (5247420).

Almost surely, 2^13993118 is an apocalyptic number.

13993118 is a deficient number, since it is larger than the sum of its proper divisors (6996562).

13993118 is an equidigital number, since it uses as much as digits as its factorization.

13993118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6996561.

The product of its digits is 5832, while the sum is 35.

The square root of 13993118 is about 3740.7376277948. The cubic root of 13993118 is about 240.9747280422.

The spelling of 13993118 in words is "thirteen million, nine hundred ninety-three thousand, one hundred eighteen".