198807355867 has 2 divisors, whose sum is σ = 198807355868. Its totient is φ = 198807355866.

The previous prime is 198807355853. The next prime is 198807356021. The reversal of 198807355867 is 768553708891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198807355867 - 2⁷ = 198807355739 is a prime.

It is a super-3 number, since 3×198807355867³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (198807325867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99403677933 + 99403677934.

It is an arithmetic number, because the mean of its divisors is an integer number (99403677934).

Almost surely, 2^198807355867 is an apocalyptic number.

198807355867 is a deficient number, since it is larger than the sum of its proper divisors (1).

198807355867 is an equidigital number, since it uses as much as digits as its factorization.

198807355867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 101606400, while the sum is 67.

The spelling of 198807355867 in words is "one hundred ninety-eight billion, eight hundred seven million, three hundred fifty-five thousand, eight hundred sixty-seven".