18213674 has 8 divisors (see below), whose sum is σ = 27458400. Its totient is φ = 9060876.

The previous prime is 18213667. The next prime is 18213703. The reversal of 18213674 is 47631281.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18213674.

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, 22484 + ... + 23279.

It is an arithmetic number, because the mean of its divisors is an integer number (3432300).

Almost surely, 2^18213674 is an apocalyptic number.

18213674 is a deficient number, since it is larger than the sum of its proper divisors (9244726).

18213674 is a wasteful number, since it uses less digits than its factorization.

18213674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45964.

The product of its digits is 8064, while the sum is 32.

The square root of 18213674 is about 4267.7481181532. The cubic root of 18213674 is about 263.1070708629.

The spelling of 18213674 in words is "eighteen million, two hundred thirteen thousand, six hundred seventy-four".