18914113 has 2 divisors, whose sum is σ = 18914114. Its totient is φ = 18914112.

The previous prime is 18914111. The next prime is 18914117. The reversal of 18914113 is 31141981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13927824 + 4986289 = 3732^2 + 2233^2 .

It is a cyclic number.

It is not a de Polignac number, because 18914113 - 2¹ = 18914111 is a prime.

Together with 18914111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18914111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9457056 + 9457057.

It is an arithmetic number, because the mean of its divisors is an integer number (9457057).

Almost surely, 2^18914113 is an apocalyptic number.

It is an amenable number.

18914113 is a deficient number, since it is larger than the sum of its proper divisors (1).

18914113 is an equidigital number, since it uses as much as digits as its factorization.

18914113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 18914113 is about 4349.0358701671. The cubic root of 18914113 is about 266.4374855568.

The spelling of 18914113 in words is "eighteen million, nine hundred fourteen thousand, one hundred thirteen".