18134894 has 4 divisors (see below), whose sum is σ = 27202344. Its totient is φ = 9067446.

The previous prime is 18134867. The next prime is 18134927. The reversal of 18134894 is 49843181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49843181 = 37 ⋅1347113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4533722 + ... + 4533725.

It is an arithmetic number, because the mean of its divisors is an integer number (6800586).

Almost surely, 2^18134894 is an apocalyptic number.

18134894 is a deficient number, since it is larger than the sum of its proper divisors (9067450).

18134894 is an equidigital number, since it uses as much as digits as its factorization.

18134894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067449.

The product of its digits is 27648, while the sum is 38.

The square root of 18134894 is about 4258.5084243195. The cubic root of 18134894 is about 262.7271817104.

The spelling of 18134894 in words is "eighteen million, one hundred thirty-four thousand, eight hundred ninety-four".