18454339 has 4 divisors (see below), whose sum is σ = 19425640. Its totient is φ = 17483040.

The previous prime is 18454313. The next prime is 18454357. The reversal of 18454339 is 93345481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93345481 = 2707 ⋅34483.

It is not a de Polignac number, because 18454339 - 2¹⁹ = 17930051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18454298 and 18454307.

It is not an unprimeable number, because it can be changed into a prime (18454309) 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, 485622 + ... + 485659.

It is an arithmetic number, because the mean of its divisors is an integer number (4856410).

Almost surely, 2^18454339 is an apocalyptic number.

18454339 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18454339 is a deficient number, since it is larger than the sum of its proper divisors (971301).

18454339 is an equidigital number, since it uses as much as digits as its factorization.

18454339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971300.

The product of its digits is 51840, while the sum is 37.

The square root of 18454339 is about 4295.8513707995. The cubic root of 18454339 is about 264.2608523275.

The spelling of 18454339 in words is "eighteen million, four hundred fifty-four thousand, three hundred thirty-nine".