18443454 has 16 divisors (see below), whose sum is σ = 37226640. Its totient is φ = 6091200.

The previous prime is 18443443. The next prime is 18443461. The reversal of 18443454 is 45434481.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13447 + ... + 14754.

It is an arithmetic number, because the mean of its divisors is an integer number (2326665).

Almost surely, 2^18443454 is an apocalyptic number.

18443454 is an abundant number, since it is smaller than the sum of its proper divisors (18783186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18443454 is a wasteful number, since it uses less digits than its factorization.

18443454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28315.

The product of its digits is 30720, while the sum is 33.

The square root of 18443454 is about 4294.5842639306. The cubic root of 18443454 is about 264.2088854141.

The spelling of 18443454 in words is "eighteen million, four hundred forty-three thousand, four hundred fifty-four".