18914299 has 2 divisors, whose sum is σ = 18914300. Its totient is φ = 18914298.

The previous prime is 18914249. The next prime is 18914327. The reversal of 18914299 is 99241981.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (99241981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18914299 - 2¹¹ = 18912251 is a prime.

It is a super-2 number, since 2×18914299² = 715501413322802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18914239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9457149 + 9457150.

It is an arithmetic number, because the mean of its divisors is an integer number (9457150).

Almost surely, 2^18914299 is an apocalyptic number.

18914299 is a deficient number, since it is larger than the sum of its proper divisors (1).

18914299 is an equidigital number, since it uses as much as digits as its factorization.

18914299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 43.

The square root of 18914299 is about 4349.0572541644. The cubic root of 18914299 is about 266.4383589295.

The spelling of 18914299 in words is "eighteen million, nine hundred fourteen thousand, two hundred ninety-nine".