18874895 has 8 divisors (see below), whose sum is σ = 24392256. Its totient is φ = 13938336.

The previous prime is 18874859. The next prime is 18874897. The reversal of 18874895 is 59847881.

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

It is a cyclic number.

It is not a de Polignac number, because 18874895 - 2⁶ = 18874831 is a prime.

It is a super-2 number, since 2×18874895² = 712523322522050, 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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145127 + ... + 145256.

It is an arithmetic number, because the mean of its divisors is an integer number (3049032).

Almost surely, 2^18874895 is an apocalyptic number.

18874895 is a deficient number, since it is larger than the sum of its proper divisors (5517361).

18874895 is a wasteful number, since it uses less digits than its factorization.

18874895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290401.

The product of its digits is 645120, while the sum is 50.

The square root of 18874895 is about 4344.5247150868. The cubic root of 18874895 is about 266.2532073644.

The spelling of 18874895 in words is "eighteen million, eight hundred seventy-four thousand, eight hundred ninety-five".