198089711 has 2 divisors, whose sum is σ = 198089712. Its totient is φ = 198089710.

The previous prime is 198089699. The next prime is 198089713. The reversal of 198089711 is 117980891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198089711 - 2²² = 193895407 is a prime.

Together with 198089713, 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 (198089713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99044855 + 99044856.

It is an arithmetic number, because the mean of its divisors is an integer number (99044856).

Almost surely, 2^198089711 is an apocalyptic number.

198089711 is a deficient number, since it is larger than the sum of its proper divisors (1).

198089711 is an equidigital number, since it uses as much as digits as its factorization.

198089711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 44.

The square root of 198089711 is about 14074.4346600494. The cubic root of 198089711 is about 582.9356817127.

The spelling of 198089711 in words is "one hundred ninety-eight million, eighty-nine thousand, seven hundred eleven".