18796218 has 32 divisors (see below), whose sum is σ = 43130880. Its totient is φ = 5349360.

The previous prime is 18796213. The next prime is 18796229. The reversal of 18796218 is 81269781.

It is a super-2 number, since 2×18796218² = 706595622207048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18796218.

It is not an unprimeable number, because it can be changed into a prime (18796213) 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, 12343 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (1347840).

Almost surely, 2^18796218 is an apocalyptic number.

18796218 is an abundant number, since it is smaller than the sum of its proper divisors (24334662).

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

18796218 is a wasteful number, since it uses less digits than its factorization.

18796218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762.

The product of its digits is 48384, while the sum is 42.

The square root of 18796218 is about 4335.4605291710. The cubic root of 18796218 is about 265.8827474258.

The spelling of 18796218 in words is "eighteen million, seven hundred ninety-six thousand, two hundred eighteen".