18894059 has 4 divisors (see below), whose sum is σ = 18939360. Its totient is φ = 18848760.

The previous prime is 18894049. The next prime is 18894091. The reversal of 18894059 is 95049881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18894059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18894019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22019 + ... + 22860.

It is an arithmetic number, because the mean of its divisors is an integer number (4734840).

Almost surely, 2^18894059 is an apocalyptic number.

18894059 is a deficient number, since it is larger than the sum of its proper divisors (45301).

18894059 is an equidigital number, since it uses as much as digits as its factorization.

18894059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45300.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 18894059 is about 4346.7296902384. The cubic root of 18894059 is about 266.3432873456.

The spelling of 18894059 in words is "eighteen million, eight hundred ninety-four thousand, fifty-nine".