18343434 has 16 divisors (see below), whose sum is σ = 37100160. Its totient is φ = 6045600.

The previous prime is 18343427. The next prime is 18343439. The reversal of 18343434 is 43434381.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18343439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16642 + ... + 17709.

It is an arithmetic number, because the mean of its divisors is an integer number (2318760).

Almost surely, 2^18343434 is an apocalyptic number.

18343434 is an abundant number, since it is smaller than the sum of its proper divisors (18756726).

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

18343434 is a wasteful number, since it uses less digits than its factorization.

18343434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34445.

The product of its digits is 13824, while the sum is 30.

The square root of 18343434 is about 4282.9235342229. The cubic root of 18343434 is about 263.7304123575.

The spelling of 18343434 in words is "eighteen million, three hundred forty-three thousand, four hundred thirty-four".