18466293998 has 16 divisors (see below), whose sum is σ = 27776407680. Its totient is φ = 9207518976.

The previous prime is 18466293997. The next prime is 18466294039. The reversal of 18466293998 is 89939266481.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18466293997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581590 + ... + 1593222.

It is an arithmetic number, because the mean of its divisors is an integer number (1736025480).

Almost surely, 2^18466293998 is an apocalyptic number.

18466293998 is a deficient number, since it is larger than the sum of its proper divisors (9310113682).

18466293998 is a wasteful number, since it uses less digits than its factorization.

18466293998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13771.

The product of its digits is 40310784, while the sum is 65.

The spelling of 18466293998 in words is "eighteen billion, four hundred sixty-six million, two hundred ninety-three thousand, nine hundred ninety-eight".