18696018 has 32 divisors (see below), whose sum is σ = 41002560. Its totient is φ = 5636160.

The previous prime is 18696017. The next prime is 18696023. The reversal of 18696018 is 81069681.

It is not an unprimeable number, because it can be changed into a prime (18696011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14496 + ... + 15732.

It is an arithmetic number, because the mean of its divisors is an integer number (1281330).

Almost surely, 2^18696018 is an apocalyptic number.

18696018 is an abundant number, since it is smaller than the sum of its proper divisors (22306542).

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

18696018 is a wasteful number, since it uses less digits than its factorization.

18696018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 18696018 is about 4323.8892215227. The cubic root of 18696018 is about 265.4094441863.

It can be divided in two parts, 1869 and 6018, that added together give a palindrome (7887).

The spelling of 18696018 in words is "eighteen million, six hundred ninety-six thousand, eighteen".