18354434 has 8 divisors (see below), whose sum is σ = 31464768. Its totient is φ = 7866180.

The previous prime is 18354433. The next prime is 18354439. The reversal of 18354434 is 43445381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18354434.

It is not an unprimeable number, because it can be changed into a prime (18354433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655502 + ... + 655529.

It is an arithmetic number, because the mean of its divisors is an integer number (3933096).

Almost surely, 2^18354434 is an apocalyptic number.

18354434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18354434 is a deficient number, since it is larger than the sum of its proper divisors (13110334).

18354434 is a wasteful number, since it uses less digits than its factorization.

18354434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311040.

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

The square root of 18354434 is about 4284.2075113141. The cubic root of 18354434 is about 263.7831188617.

The spelling of 18354434 in words is "eighteen million, three hundred fifty-four thousand, four hundred thirty-four".