18636817098 has 16 divisors (see below), whose sum is σ = 37281728160. Its totient is φ = 6210923376.

The previous prime is 18636816997. The next prime is 18636817099. The reversal of 18636817098 is 89071863681.

It is not an unprimeable number, because it can be changed into a prime (18636817099) 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, 307108 + ... + 362751.

It is an arithmetic number, because the mean of its divisors is an integer number (2330108010).

Almost surely, 2^18636817098 is an apocalyptic number.

18636817098 is an abundant number, since it is smaller than the sum of its proper divisors (18644911062).

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

18636817098 is a wasteful number, since it uses less digits than its factorization.

18636817098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674501.

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

The spelling of 18636817098 in words is "eighteen billion, six hundred thirty-six million, eight hundred seventeen thousand, ninety-eight".