198116884487 has 2 divisors, whose sum is σ = 198116884488. Its totient is φ = 198116884486.

The previous prime is 198116884463. The next prime is 198116884507. The reversal of 198116884487 is 784488611891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198116884487 - 2³⁰ = 197043142663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198116884447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99058442243 + 99058442244.

It is an arithmetic number, because the mean of its divisors is an integer number (99058442244).

Almost surely, 2^198116884487 is an apocalyptic number.

198116884487 is a deficient number, since it is larger than the sum of its proper divisors (1).

198116884487 is an equidigital number, since it uses as much as digits as its factorization.

198116884487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24772608, while the sum is 65.

The spelling of 198116884487 in words is "one hundred ninety-eight billion, one hundred sixteen million, eight hundred eighty-four thousand, four hundred eighty-seven".