18874893 has 8 divisors (see below), whose sum is σ = 25751968. Its totient is φ = 12290544.

The previous prime is 18874859. The next prime is 18874897. The reversal of 18874893 is 39847881.

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

It is not a de Polignac number, because 18874893 - 2¹⁸ = 18612749 is a prime.

It is a super-2 number, since 2×18874893² = 712523171522898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73030 + ... + 73287.

It is an arithmetic number, because the mean of its divisors is an integer number (3218996).

Almost surely, 2^18874893 is an apocalyptic number.

It is an amenable number.

18874893 is a deficient number, since it is larger than the sum of its proper divisors (6877075).

18874893 is a wasteful number, since it uses less digits than its factorization.

18874893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146363.

The product of its digits is 387072, while the sum is 48.

The square root of 18874893 is about 4344.5244849120. The cubic root of 18874893 is about 266.2531979602.

The spelling of 18874893 in words is "eighteen million, eight hundred seventy-four thousand, eight hundred ninety-three".