13789918 has 4 divisors (see below), whose sum is σ = 20684880. Its totient is φ = 6894958.

The previous prime is 13789889. The next prime is 13789933. The reversal of 13789918 is 81998731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81998731 = 59 ⋅1389809.

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, 3447478 + ... + 3447481.

It is an arithmetic number, because the mean of its divisors is an integer number (5171220).

Almost surely, 2^13789918 is an apocalyptic number.

13789918 is a deficient number, since it is larger than the sum of its proper divisors (6894962).

13789918 is an equidigital number, since it uses as much as digits as its factorization.

13789918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894961.

The product of its digits is 108864, while the sum is 46.

The square root of 13789918 is about 3713.4778846790. The cubic root of 13789918 is about 239.8026038931.

The spelling of 13789918 in words is "thirteen million, seven hundred eighty-nine thousand, nine hundred eighteen".