18740299 has 2 divisors, whose sum is σ = 18740300. Its totient is φ = 18740298.

The previous prime is 18740297. The next prime is 18740317. The reversal of 18740299 is 99204781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18740299 - 2¹ = 18740297 is a prime.

Together with 18740297, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18740291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9370149 + 9370150.

It is an arithmetic number, because the mean of its divisors is an integer number (9370150).

Almost surely, 2^18740299 is an apocalyptic number.

18740299 is a deficient number, since it is larger than the sum of its proper divisors (1).

18740299 is an equidigital number, since it uses as much as digits as its factorization.

18740299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 18740299 is about 4329.0066990015. The cubic root of 18740299 is about 265.6188172771.

The spelling of 18740299 in words is "eighteen million, seven hundred forty thousand, two hundred ninety-nine".