18106454 has 4 divisors (see below), whose sum is σ = 27159684. Its totient is φ = 9053226.

The previous prime is 18106453. The next prime is 18106463. The reversal of 18106454 is 45460181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45460181 = 13 ⋅3496937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18106453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4526612 + ... + 4526615.

It is an arithmetic number, because the mean of its divisors is an integer number (6789921).

Almost surely, 2^18106454 is an apocalyptic number.

18106454 is a deficient number, since it is larger than the sum of its proper divisors (9053230).

18106454 is an equidigital number, since it uses as much as digits as its factorization.

18106454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9053229.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18106454 is about 4255.1679167807. The cubic root of 18106454 is about 262.5897694484.

The spelling of 18106454 in words is "eighteen million, one hundred six thousand, four hundred fifty-four".