198878801 has 8 divisors (see below), whose sum is σ = 229721184. Its totient is φ = 170163520.

The previous prime is 198878753. The next prime is 198878851. The reversal of 198878801 is 108878891.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198878801 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 198878801.

It is not an unprimeable number, because it can be changed into a prime (198878851) 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, 531575 + ... + 531948.

It is an arithmetic number, because the mean of its divisors is an integer number (28715148).

Almost surely, 2^198878801 is an apocalyptic number.

198878801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

198878801 is a deficient number, since it is larger than the sum of its proper divisors (30842383).

198878801 is a wasteful number, since it uses less digits than its factorization.

198878801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063551.

The product of its (nonzero) digits is 258048, while the sum is 50.

The square root of 198878801 is about 14102.4395407320. The cubic root of 198878801 is about 583.7086972567.

The spelling of 198878801 in words is "one hundred ninety-eight million, eight hundred seventy-eight thousand, eight hundred one".