198795913 has 2 divisors, whose sum is σ = 198795914. Its totient is φ = 198795912.

The previous prime is 198795907. The next prime is 198795937. The reversal of 198795913 is 319597891.

It is a happy number.

198795913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196756729 + 2039184 = 14027^2 + 1428^2 .

It is a cyclic number.

It is not a de Polignac number, because 198795913 - 2²⁵ = 165241481 is a prime.

It is not a weakly prime, because it can be changed into another prime (198795973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99397956 + 99397957.

It is an arithmetic number, because the mean of its divisors is an integer number (99397957).

Almost surely, 2^198795913 is an apocalyptic number.

198795913 is the 7537-th centered heptagonal number.

It is an amenable number.

198795913 is a deficient number, since it is larger than the sum of its proper divisors (1).

198795913 is an equidigital number, since it uses as much as digits as its factorization.

198795913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 52.

The square root of 198795913 is about 14099.5004521437. The cubic root of 198795913 is about 583.6275939761.

The spelling of 198795913 in words is "one hundred ninety-eight million, seven hundred ninety-five thousand, nine hundred thirteen".