18714899 has 4 divisors (see below), whose sum is σ = 21388464. Its totient is φ = 16041336.

The previous prime is 18714887. The next prime is 18714911. The reversal of 18714899 is 99841781.

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

It is an interprime number because it is at equal distance from previous prime (18714887) and next prime (18714911).

It is a cyclic number.

It is not a de Polignac number, because 18714899 - 2¹² = 18710803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18714809) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336772 + ... + 1336785.

It is an arithmetic number, because the mean of its divisors is an integer number (5347116).

Almost surely, 2^18714899 is an apocalyptic number.

18714899 is a deficient number, since it is larger than the sum of its proper divisors (2673565).

18714899 is an equidigital number, since it uses as much as digits as its factorization.

18714899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673564.

The product of its digits is 145152, while the sum is 47.

The square root of 18714899 is about 4326.0720058732. The cubic root of 18714899 is about 265.4987592789.

The spelling of 18714899 in words is "eighteen million, seven hundred fourteen thousand, eight hundred ninety-nine".