18374854 has 4 divisors (see below), whose sum is σ = 27562284. Its totient is φ = 9187426.

The previous prime is 18374833. The next prime is 18374857. The reversal of 18374854 is 45847381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45847381 = 127 ⋅361003.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18374857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4593712 + ... + 4593715.

It is an arithmetic number, because the mean of its divisors is an integer number (6890571).

Almost surely, 2^18374854 is an apocalyptic number.

18374854 is a deficient number, since it is larger than the sum of its proper divisors (9187430).

18374854 is an equidigital number, since it uses as much as digits as its factorization.

18374854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187429.

The product of its digits is 107520, while the sum is 40.

The square root of 18374854 is about 4286.5900200509. The cubic root of 18374854 is about 263.8809054960.

The spelling of 18374854 in words is "eighteen million, three hundred seventy-four thousand, eight hundred fifty-four".