198195885527 has 2 divisors, whose sum is σ = 198195885528. Its totient is φ = 198195885526.

The previous prime is 198195885487. The next prime is 198195885541. The reversal of 198195885527 is 725588591891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198195885527 - 2¹⁴ = 198195869143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198195885427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99097942763 + 99097942764.

It is an arithmetic number, because the mean of its divisors is an integer number (99097942764).

Almost surely, 2^198195885527 is an apocalyptic number.

198195885527 is a deficient number, since it is larger than the sum of its proper divisors (1).

198195885527 is an equidigital number, since it uses as much as digits as its factorization.

198195885527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576000, while the sum is 68.

The spelling of 198195885527 in words is "one hundred ninety-eight billion, one hundred ninety-five million, eight hundred eighty-five thousand, five hundred twenty-seven".