18868822 has 12 divisors (see below), whose sum is σ = 32924340. Its totient is φ = 8086596.

The previous prime is 18868813. The next prime is 18868831. The reversal of 18868822 is 22886881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18868813) and next prime (18868831).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96172 + ... + 96367.

It is an arithmetic number, because the mean of its divisors is an integer number (2743695).

Almost surely, 2^18868822 is an apocalyptic number.

18868822 is a deficient number, since it is larger than the sum of its proper divisors (14055518).

18868822 is a wasteful number, since it uses less digits than its factorization.

18868822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192555 (or 192548 counting only the distinct ones).

The product of its digits is 98304, while the sum is 43.

The square root of 18868822 is about 4343.8257331527. The cubic root of 18868822 is about 266.2246486328.

The spelling of 18868822 in words is "eighteen million, eight hundred sixty-eight thousand, eight hundred twenty-two".