18945254 has 8 divisors (see below), whose sum is σ = 28899720. Its totient is φ = 9312016.

The previous prime is 18945233. The next prime is 18945257. The reversal of 18945254 is 45254981.

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 (18945257) 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, 80159 + ... + 80394.

It is an arithmetic number, because the mean of its divisors is an integer number (3612465).

Almost surely, 2^18945254 is an apocalyptic number.

18945254 is a deficient number, since it is larger than the sum of its proper divisors (9954466).

18945254 is a wasteful number, since it uses less digits than its factorization.

18945254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160614.

The product of its digits is 57600, while the sum is 38.

The square root of 18945254 is about 4352.6146165265. The cubic root of 18945254 is about 266.5836300489.

The spelling of 18945254 in words is "eighteen million, nine hundred forty-five thousand, two hundred fifty-four".