18454355 has 4 divisors (see below), whose sum is σ = 22145232. Its totient is φ = 14763480.

The previous prime is 18454313. The next prime is 18454357. The reversal of 18454355 is 55345481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55345481 = 59 ⋅938059.

It is not a de Polignac number, because 18454355 - 2¹⁶ = 18388819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18454357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845431 + ... + 1845440.

It is an arithmetic number, because the mean of its divisors is an integer number (5536308).

Almost surely, 2^18454355 is an apocalyptic number.

18454355 is a deficient number, since it is larger than the sum of its proper divisors (3690877).

18454355 is an equidigital number, since it uses as much as digits as its factorization.

18454355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690876.

The product of its digits is 48000, while the sum is 35.

The square root of 18454355 is about 4295.8532330609. The cubic root of 18454355 is about 264.2609286993.

The spelling of 18454355 in words is "eighteen million, four hundred fifty-four thousand, three hundred fifty-five".