18398245334 has 32 divisors (see below), whose sum is σ = 32106101760. Its totient is φ = 7744306752.

The previous prime is 18398245297. The next prime is 18398245343. The reversal of 18398245334 is 43354289381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206597 + ... + 281919.

It is an arithmetic number, because the mean of its divisors is an integer number (1003315680).

Almost surely, 2^18398245334 is an apocalyptic number.

18398245334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18398245334 is a deficient number, since it is larger than the sum of its proper divisors (13707856426).

18398245334 is a wasteful number, since it uses less digits than its factorization.

18398245334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75644.

The product of its digits is 2488320, while the sum is 50.

The spelling of 18398245334 in words is "eighteen billion, three hundred ninety-eight million, two hundred forty-five thousand, three hundred thirty-four".