18689914 has 8 divisors (see below), whose sum is σ = 28103040. Its totient is φ = 9322236.

The previous prime is 18689897. The next prime is 18689917. The reversal of 18689914 is 41998681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18689917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10314 + ... + 11989.

It is an arithmetic number, because the mean of its divisors is an integer number (3512880).

Almost surely, 2^18689914 is an apocalyptic number.

18689914 is a deficient number, since it is larger than the sum of its proper divisors (9413126).

18689914 is a wasteful number, since it uses less digits than its factorization.

18689914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22724.

The product of its digits is 124416, while the sum is 46.

The square root of 18689914 is about 4323.1833178805. The cubic root of 18689914 is about 265.3805568302.

It can be divided in two parts, 186 and 89914, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 18689914 in words is "eighteen million, six hundred eighty-nine thousand, nine hundred fourteen".