198026887 has 2 divisors, whose sum is σ = 198026888. Its totient is φ = 198026886.

The previous prime is 198026867. The next prime is 198026891. The reversal of 198026887 is 788620891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198026887 - 2¹¹ = 198024839 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198026887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198026827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99013443 + 99013444.

It is an arithmetic number, because the mean of its divisors is an integer number (99013444).

Almost surely, 2^198026887 is an apocalyptic number.

198026887 is a deficient number, since it is larger than the sum of its proper divisors (1).

198026887 is an equidigital number, since it uses as much as digits as its factorization.

198026887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 198026887 is about 14072.2026349822. The cubic root of 198026887 is about 582.8740493285.

The spelling of 198026887 in words is "one hundred ninety-eight million, twenty-six thousand, eight hundred eighty-seven".