18112634 has 4 divisors (see below), whose sum is σ = 27168954. Its totient is φ = 9056316.

The previous prime is 18112621. The next prime is 18112637. The reversal of 18112634 is 43621181.

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

It can be written as a sum of positive squares in only one way, i.e., 18037009 + 75625 = 4247^2 + 275^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18112637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4528157 + ... + 4528160.

Almost surely, 2^18112634 is an apocalyptic number.

18112634 is a deficient number, since it is larger than the sum of its proper divisors (9056320).

18112634 is an equidigital number, since it uses as much as digits as its factorization.

18112634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9056319.

The product of its digits is 1152, while the sum is 26.

The square root of 18112634 is about 4255.8940306356. The cubic root of 18112634 is about 262.6196413048.

The spelling of 18112634 in words is "eighteen million, one hundred twelve thousand, six hundred thirty-four".