198818899826 has 8 divisors (see below), whose sum is σ = 304573633920. Its totient is φ = 97294355188.

The previous prime is 198818899801. The next prime is 198818899879. The reversal of 198818899826 is 628998818891.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057547246 + ... + 1057547433.

It is an arithmetic number, because the mean of its divisors is an integer number (38071704240).

Almost surely, 2^198818899826 is an apocalyptic number.

198818899826 is a deficient number, since it is larger than the sum of its proper divisors (105754734094).

198818899826 is a wasteful number, since it uses less digits than its factorization.

198818899826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115094728.

The product of its digits is 286654464, while the sum is 77.

The spelling of 198818899826 in words is "one hundred ninety-eight billion, eight hundred eighteen million, eight hundred ninety-nine thousand, eight hundred twenty-six".