18453434 has 16 divisors (see below), whose sum is σ = 28483488. Its totient is φ = 8962512.

The previous prime is 18453431. The next prime is 18453437. The reversal of 18453434 is 43435481.

It is an interprime number because it is at equal distance from previous prime (18453431) and next prime (18453437).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18453434.

It is not an unprimeable number, because it can be changed into a prime (18453431) 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 7 ways as a sum of consecutive naturals, for example, 10529 + ... + 12155.

It is an arithmetic number, because the mean of its divisors is an integer number (1780218).

Almost surely, 2^18453434 is an apocalyptic number.

18453434 is a deficient number, since it is larger than the sum of its proper divisors (10030054).

18453434 is a wasteful number, since it uses less digits than its factorization.

18453434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789.

The product of its digits is 23040, while the sum is 32.

The square root of 18453434 is about 4295.7460353238. The cubic root of 18453434 is about 264.2565324766.

The spelling of 18453434 in words is "eighteen million, four hundred fifty-three thousand, four hundred thirty-four".