198730079 has 2 divisors, whose sum is σ = 198730080. Its totient is φ = 198730078.

The previous prime is 198730067. The next prime is 198730087. The reversal of 198730079 is 970037891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198730079 - 2²⁴ = 181952863 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198700079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99365039 + 99365040.

It is an arithmetic number, because the mean of its divisors is an integer number (99365040).

Almost surely, 2^198730079 is an apocalyptic number.

198730079 is a deficient number, since it is larger than the sum of its proper divisors (1).

198730079 is an equidigital number, since it uses as much as digits as its factorization.

198730079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 198730079 is about 14097.1656371059. The cubic root of 198730079 is about 583.5631614288.

The spelling of 198730079 in words is "one hundred ninety-eight million, seven hundred thirty thousand, seventy-nine".