18434998 has 8 divisors (see below), whose sum is σ = 28240992. Its totient is φ = 9021336.

The previous prime is 18434989. The next prime is 18435007. The reversal of 18434998 is 89943481.

It is an interprime number because it is at equal distance from previous prime (18434989) and next prime (18435007).

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 97965 + ... + 98152.

It is an arithmetic number, because the mean of its divisors is an integer number (3530124).

Almost surely, 2^18434998 is an apocalyptic number.

18434998 is a deficient number, since it is larger than the sum of its proper divisors (9805994).

18434998 is a wasteful number, since it uses less digits than its factorization.

18434998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196166.

The product of its digits is 248832, while the sum is 46.

The square root of 18434998 is about 4293.5996553009. The cubic root of 18434998 is about 264.1685008624.

The spelling of 18434998 in words is "eighteen million, four hundred thirty-four thousand, nine hundred ninety-eight".