18618909098 has 48 divisors (see below), whose sum is σ = 29446024608. Its totient is φ = 8823528000.

The previous prime is 18618909097. The next prime is 18618909107. The reversal of 18618909098 is 89090981681.

18618909098 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18618909097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26560148 + ... + 26560848.

It is an arithmetic number, because the mean of its divisors is an integer number (613458846).

Almost surely, 2^18618909098 is an apocalyptic number.

18618909098 is a deficient number, since it is larger than the sum of its proper divisors (10827115510).

18618909098 is an equidigital number, since it uses as much as digits as its factorization.

18618909098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 59.

The spelling of 18618909098 in words is "eighteen billion, six hundred eighteen million, nine hundred nine thousand, ninety-eight".