18054499 has 2 divisors, whose sum is σ = 18054500. Its totient is φ = 18054498.

The previous prime is 18054497. The next prime is 18054511. The reversal of 18054499 is 99445081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18054499 - 2¹ = 18054497 is a prime.

Together with 18054497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18054497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9027249 + 9027250.

It is an arithmetic number, because the mean of its divisors is an integer number (9027250).

Almost surely, 2^18054499 is an apocalyptic number.

18054499 is a deficient number, since it is larger than the sum of its proper divisors (1).

18054499 is an equidigital number, since it uses as much as digits as its factorization.

18054499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 18054499 is about 4249.0586016199. The cubic root of 18054499 is about 262.3383688276.

The spelling of 18054499 in words is "eighteen million, fifty-four thousand, four hundred ninety-nine".