18473434 has 32 divisors (see below), whose sum is σ = 34254720. Its totient is φ = 7293888.

The previous prime is 18473401. The next prime is 18473437. The reversal of 18473434 is 43437481.

It is a self number, because there is not a number n which added to its sum of digits gives 18473434.

It is not an unprimeable number, because it can be changed into a prime (18473437) 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 15 ways as a sum of consecutive naturals, for example, 8904 + ... + 10780.

It is an arithmetic number, because the mean of its divisors is an integer number (1070460).

Almost surely, 2^18473434 is an apocalyptic number.

18473434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18473434 is a deficient number, since it is larger than the sum of its proper divisors (15781286).

18473434 is a wasteful number, since it uses less digits than its factorization.

18473434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942.

The product of its digits is 32256, while the sum is 34.

The square root of 18473434 is about 4298.0732892774. The cubic root of 18473434 is about 264.3519658873.

The spelling of 18473434 in words is "eighteen million, four hundred seventy-three thousand, four hundred thirty-four".