198839461069 has 2 divisors, whose sum is σ = 198839461070. Its totient is φ = 198839461068.

The previous prime is 198839461061. The next prime is 198839461081. The reversal of 198839461069 is 960164938891.

198839461069 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., 119913301225 + 78926159844 = 346285^2 + 280938^2 .

It is a cyclic number.

It is not a de Polignac number, because 198839461069 - 2³ = 198839461061 is a prime.

It is a super-2 number, since 2×198839461069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198839461069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198839461061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99419730534 + 99419730535.

It is an arithmetic number, because the mean of its divisors is an integer number (99419730535).

Almost surely, 2^198839461069 is an apocalyptic number.

It is an amenable number.

198839461069 is a deficient number, since it is larger than the sum of its proper divisors (1).

198839461069 is an equidigital number, since it uses as much as digits as its factorization.

198839461069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20155392, while the sum is 64.

The spelling of 198839461069 in words is "one hundred ninety-eight billion, eight hundred thirty-nine million, four hundred sixty-one thousand, sixty-nine".