198618827 has 8 divisors (see below), whose sum is σ = 217047600. Its totient is φ = 180252160.

The previous prime is 198618793. The next prime is 198618841. The reversal of 198618827 is 728816891.

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

It is not a de Polignac number, because 198618827 - 2¹⁶ = 198553291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198618527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8702 + ... + 21747.

It is an arithmetic number, because the mean of its divisors is an integer number (27130950).

Almost surely, 2^198618827 is an apocalyptic number.

198618827 is a deficient number, since it is larger than the sum of its proper divisors (18428773).

198618827 is a wasteful number, since it uses less digits than its factorization.

198618827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31053.

The product of its digits is 387072, while the sum is 50.

The square root of 198618827 is about 14093.2191851259. The cubic root of 198618827 is about 583.4542453758.

The spelling of 198618827 in words is "one hundred ninety-eight million, six hundred eighteen thousand, eight hundred twenty-seven".