18917014 has 4 divisors (see below), whose sum is σ = 28375524. Its totient is φ = 9458506.

The previous prime is 18917011. The next prime is 18917029. The reversal of 18917014 is 41071981.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18917011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4729252 + ... + 4729255.

It is an arithmetic number, because the mean of its divisors is an integer number (7093881).

Almost surely, 2^18917014 is an apocalyptic number.

18917014 is a deficient number, since it is larger than the sum of its proper divisors (9458510).

18917014 is an equidigital number, since it uses as much as digits as its factorization.

18917014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9458509.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 18917014 is about 4349.3693795768. The cubic root of 18917014 is about 266.4511067019.

Adding to 18917014 its reverse (41071981), we get a palindrome (59988995).

The spelling of 18917014 in words is "eighteen million, nine hundred seventeen thousand, fourteen".