198880904837 has 2 divisors, whose sum is σ = 198880904838. Its totient is φ = 198880904836.

The previous prime is 198880904819. The next prime is 198880904839. The reversal of 198880904837 is 738409088891.

198880904837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110201425156 + 88679479681 = 331966^2 + 297791^2 .

It is a cyclic number.

It is not a de Polignac number, because 198880904837 - 2⁶ = 198880904773 is a prime.

It is a super-2 number, since 2×198880904837² (a number of 23 digits) contains 22 as substring.

Together with 198880904839, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198880904839) 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, 99440452418 + 99440452419.

It is an arithmetic number, because the mean of its divisors is an integer number (99440452419).

Almost surely, 2^198880904837 is an apocalyptic number.

It is an amenable number.

198880904837 is a deficient number, since it is larger than the sum of its proper divisors (1).

198880904837 is an equidigital number, since it uses as much as digits as its factorization.

198880904837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27869184, while the sum is 65.

The spelling of 198880904837 in words is "one hundred ninety-eight billion, eight hundred eighty million, nine hundred four thousand, eight hundred thirty-seven".