18807122 has 8 divisors (see below), whose sum is σ = 28275696. Its totient is φ = 9381892.

The previous prime is 18807121. The next prime is 18807133. The reversal of 18807122 is 22170881.

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 (18807121) 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, 9728 + ... + 11499.

It is an arithmetic number, because the mean of its divisors is an integer number (3534462).

Almost surely, 2^18807122 is an apocalyptic number.

18807122 is a deficient number, since it is larger than the sum of its proper divisors (9468574).

18807122 is a wasteful number, since it uses less digits than its factorization.

18807122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21672.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 18807122 is about 4336.7178833768. The cubic root of 18807122 is about 265.9341518277.

The spelling of 18807122 in words is "eighteen million, eight hundred seven thousand, one hundred twenty-two".