198602879 has 2 divisors, whose sum is σ = 198602880. Its totient is φ = 198602878.

The previous prime is 198602843. The next prime is 198602881. The reversal of 198602879 is 978206891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198602879 - 2¹⁶ = 198537343 is a prime.

Together with 198602881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198602809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99301439 + 99301440.

It is an arithmetic number, because the mean of its divisors is an integer number (99301440).

Almost surely, 2^198602879 is an apocalyptic number.

198602879 is a deficient number, since it is larger than the sum of its proper divisors (1).

198602879 is an equidigital number, since it uses as much as digits as its factorization.

198602879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 198602879 is about 14092.6533697526. The cubic root of 198602879 is about 583.4386289016.

The spelling of 198602879 in words is "one hundred ninety-eight million, six hundred two thousand, eight hundred seventy-nine".