18190474 has 8 divisors (see below), whose sum is σ = 27453600. Its totient is φ = 9039276.

The previous prime is 18190451. The next prime is 18190477. The reversal of 18190474 is 47409181.

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 (18190477) 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, 27574 + ... + 28225.

It is an arithmetic number, because the mean of its divisors is an integer number (3431700).

Almost surely, 2^18190474 is an apocalyptic number.

18190474 is a deficient number, since it is larger than the sum of its proper divisors (9263126).

18190474 is a wasteful number, since it uses less digits than its factorization.

18190474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55964.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18190474 is about 4265.0291909904. The cubic root of 18190474 is about 262.9953109180.

The spelling of 18190474 in words is "eighteen million, one hundred ninety thousand, four hundred seventy-four".