18630786198 has 32 divisors (see below), whose sum is σ = 37508002560. Its totient is φ = 6169237280.

The previous prime is 18630786127. The next prime is 18630786199. The reversal of 18630786198 is 89168703681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18630786199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1930048 + ... + 1939676.

It is an arithmetic number, because the mean of its divisors is an integer number (1172125080).

Almost surely, 2^18630786198 is an apocalyptic number.

18630786198 is an abundant number, since it is smaller than the sum of its proper divisors (18877216362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18630786198 is a wasteful number, since it uses less digits than its factorization.

18630786198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11732.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 18630786198 in words is "eighteen billion, six hundred thirty million, seven hundred eighty-six thousand, one hundred ninety-eight".