18491114 has 4 divisors (see below), whose sum is σ = 27736674. Its totient is φ = 9245556.

The previous prime is 18491111. The next prime is 18491147. The reversal of 18491114 is 41119481.

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., 10465225 + 8025889 = 3235^2 + 2833^2 .

It is not an unprimeable number, because it can be changed into a prime (18491111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4622777 + ... + 4622780.

Almost surely, 2^18491114 is an apocalyptic number.

18491114 is a deficient number, since it is larger than the sum of its proper divisors (9245560).

18491114 is an equidigital number, since it uses as much as digits as its factorization.

18491114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9245559.

The product of its digits is 1152, while the sum is 29.

The square root of 18491114 is about 4300.1295329327. The cubic root of 18491114 is about 264.4362716810.

The spelling of 18491114 in words is "eighteen million, four hundred ninety-one thousand, one hundred fourteen".