18745894 has 8 divisors (see below), whose sum is σ = 29598840. Its totient is φ = 8879616.

The previous prime is 18745891. The next prime is 18745901. The reversal of 18745894 is 49854781.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18745891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246619 + ... + 246694.

It is an arithmetic number, because the mean of its divisors is an integer number (3699855).

Almost surely, 2^18745894 is an apocalyptic number.

18745894 is a deficient number, since it is larger than the sum of its proper divisors (10852946).

18745894 is a wasteful number, since it uses less digits than its factorization.

18745894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493334.

The product of its digits is 322560, while the sum is 46.

The square root of 18745894 is about 4329.6528729218. The cubic root of 18745894 is about 265.6452485418.

The spelling of 18745894 in words is "eighteen million, seven hundred forty-five thousand, eight hundred ninety-four".