198089713 has 2 divisors, whose sum is σ = 198089714. Its totient is φ = 198089712.

The previous prime is 198089711. The next prime is 198089719. The reversal of 198089713 is 317980891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184199184 + 13890529 = 13572^2 + 3727^2 .

It is a cyclic number.

It is not a de Polignac number, because 198089713 - 2¹ = 198089711 is a prime.

Together with 198089711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (198089711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99044856 + 99044857.

It is an arithmetic number, because the mean of its divisors is an integer number (99044857).

Almost surely, 2^198089713 is an apocalyptic number.

It is an amenable number.

198089713 is a deficient number, since it is larger than the sum of its proper divisors (1).

198089713 is an equidigital number, since it uses as much as digits as its factorization.

198089713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 198089713 is about 14074.4347311002. The cubic root of 198089713 is about 582.9356836745.

The spelling of 198089713 in words is "one hundred ninety-eight million, eighty-nine thousand, seven hundred thirteen".