18090574 has 8 divisors (see below), whose sum is σ = 27244728. Its totient is φ = 9009000.

The previous prime is 18090563. The next prime is 18090607. The reversal of 18090574 is 47509081.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17517 + ... + 18520.

It is an arithmetic number, because the mean of its divisors is an integer number (3405591).

Almost surely, 2^18090574 is an apocalyptic number.

18090574 is a deficient number, since it is larger than the sum of its proper divisors (9154154).

18090574 is a wasteful number, since it uses less digits than its factorization.

18090574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36290.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18090574 is about 4253.3015411560. The cubic root of 18090574 is about 262.5129801594.

The spelling of 18090574 in words is "eighteen million, ninety thousand, five hundred seventy-four".