18354184198 has 32 divisors (see below), whose sum is σ = 34389854208. Its totient is φ = 7164547200.

The previous prime is 18354184193. The next prime is 18354184201. The reversal of 18354184198 is 89148145381.

It is a super-2 number, since 2×18354184198² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18354184193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236468 + ... + 1251223.

It is an arithmetic number, because the mean of its divisors is an integer number (1074682944).

Almost surely, 2^18354184198 is an apocalyptic number.

18354184198 is a deficient number, since it is larger than the sum of its proper divisors (16035670010).

18354184198 is a wasteful number, since it uses less digits than its factorization.

18354184198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487748.

The product of its digits is 1105920, while the sum is 52.

The spelling of 18354184198 in words is "eighteen billion, three hundred fifty-four million, one hundred eighty-four thousand, one hundred ninety-eight".