18874194 has 16 divisors (see below), whose sum is σ = 37813440. Its totient is φ = 6280560.

The previous prime is 18874183. The next prime is 18874211. The reversal of 18874194 is 49147881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (2363340).

Almost surely, 2^18874194 is an apocalyptic number.

18874194 is an abundant number, since it is smaller than the sum of its proper divisors (18939246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18874194 is a wasteful number, since it uses less digits than its factorization.

18874194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5425.

The product of its digits is 64512, while the sum is 42.

The square root of 18874194 is about 4344.4440380790. Note that the first 3 decimals coincide. The cubic root of 18874194 is about 266.2499111728.

The spelling of 18874194 in words is "eighteen million, eight hundred seventy-four thousand, one hundred ninety-four".