18454499 has 4 divisors (see below), whose sum is σ = 21090864. Its totient is φ = 15818136.

The previous prime is 18454483. The next prime is 18454507. The reversal of 18454499 is 99445481.

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

It is a cyclic number.

It is not a de Polignac number, because 18454499 - 2⁴ = 18454483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18454199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1318172 + ... + 1318185.

It is an arithmetic number, because the mean of its divisors is an integer number (5272716).

Almost surely, 2^18454499 is an apocalyptic number.

18454499 is a deficient number, since it is larger than the sum of its proper divisors (2636365).

18454499 is an equidigital number, since it uses as much as digits as its factorization.

18454499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636364.

The product of its digits is 207360, while the sum is 44.

The square root of 18454499 is about 4295.8699933774. The cubic root of 18454499 is about 264.2616160434.

The spelling of 18454499 in words is "eighteen million, four hundred fifty-four thousand, four hundred ninety-nine".