18514999 has 2 divisors, whose sum is σ = 18515000. Its totient is φ = 18514998.

The previous prime is 18514961. The next prime is 18515009. The reversal of 18514999 is 99941581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18514999 - 2¹⁷ = 18383927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18514919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9257499 + 9257500.

It is an arithmetic number, because the mean of its divisors is an integer number (9257500).

Almost surely, 2^18514999 is an apocalyptic number.

18514999 is a deficient number, since it is larger than the sum of its proper divisors (1).

18514999 is an equidigital number, since it uses as much as digits as its factorization.

18514999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 46.

The square root of 18514999 is about 4302.9058785895. The cubic root of 18514999 is about 264.5500802706.

The spelling of 18514999 in words is "eighteen million, five hundred fourteen thousand, nine hundred ninety-nine".