18362779198 has 8 divisors (see below), whose sum is σ = 27591907392. Its totient is φ = 9165476736.

The previous prime is 18362779111. The next prime is 18362779199. The reversal of 18362779198 is 89197726381.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18362779199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7954990 + ... + 7957297.

It is an arithmetic number, because the mean of its divisors is an integer number (3448988424).

Almost surely, 2^18362779198 is an apocalyptic number.

18362779198 is a deficient number, since it is larger than the sum of its proper divisors (9229128194).

18362779198 is a wasteful number, since it uses less digits than its factorization.

18362779198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15912866.

The product of its digits is 9144576, while the sum is 61.

The spelling of 18362779198 in words is "eighteen billion, three hundred sixty-two million, seven hundred seventy-nine thousand, one hundred ninety-eight".