18290522 has 8 divisors (see below), whose sum is σ = 27495936. Its totient is φ = 9125212.

The previous prime is 18290513. The next prime is 18290533. The reversal of 18290522 is 22509281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8858 + ... + 10725.

It is an arithmetic number, because the mean of its divisors is an integer number (3436992).

Almost surely, 2^18290522 is an apocalyptic number.

18290522 is a deficient number, since it is larger than the sum of its proper divisors (9205414).

18290522 is a wasteful number, since it uses less digits than its factorization.

18290522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20052.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 18290522 is about 4276.7419842679. The cubic root of 18290522 is about 263.4765896097.

The spelling of 18290522 in words is "eighteen million, two hundred ninety thousand, five hundred twenty-two".