18487122 has 16 divisors (see below), whose sum is σ = 37495872. Its totient is φ = 6075440.

The previous prime is 18487111. The next prime is 18487151. The reversal of 18487122 is 22178481.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21273 + ... + 22124.

It is an arithmetic number, because the mean of its divisors is an integer number (2343492).

Almost surely, 2^18487122 is an apocalyptic number.

18487122 is an abundant number, since it is smaller than the sum of its proper divisors (19008750).

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

18487122 is a wasteful number, since it uses less digits than its factorization.

18487122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43473.

The product of its digits is 7168, while the sum is 33.

The square root of 18487122 is about 4299.6653358139. The cubic root of 18487122 is about 264.4172408180.

The spelling of 18487122 in words is "eighteen million, four hundred eighty-seven thousand, one hundred twenty-two".