18434455 has 8 divisors (see below), whose sum is σ = 23823072. Its totient is φ = 13613088.

The previous prime is 18434417. The next prime is 18434483. The reversal of 18434455 is 55443481.

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

It is a cyclic number.

It is not a de Polignac number, because 18434455 - 2¹³ = 18426263 is a prime.

It is a super-2 number, since 2×18434455² = 679658262294050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18434455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141739 + ... + 141868.

It is an arithmetic number, because the mean of its divisors is an integer number (2977884).

Almost surely, 2^18434455 is an apocalyptic number.

18434455 is a deficient number, since it is larger than the sum of its proper divisors (5388617).

18434455 is a wasteful number, since it uses less digits than its factorization.

18434455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283625.

The product of its digits is 38400, while the sum is 34.

The square root of 18434455 is about 4293.5364211801. The cubic root of 18434455 is about 264.1659071563.

The spelling of 18434455 in words is "eighteen million, four hundred thirty-four thousand, four hundred fifty-five".