198842775 has 12 divisors (see below), whose sum is σ = 328753512. Its totient is φ = 106049440.

The previous prime is 198842753. The next prime is 198842779. The reversal of 198842775 is 577248891.

It is not a de Polignac number, because 198842775 - 2¹⁹ = 198318487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198842779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1325544 + ... + 1325693.

It is an arithmetic number, because the mean of its divisors is an integer number (27396126).

Almost surely, 2^198842775 is an apocalyptic number.

198842775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198842775 is a deficient number, since it is larger than the sum of its proper divisors (129910737).

198842775 is a wasteful number, since it uses less digits than its factorization.

198842775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651250 (or 2651245 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 198842775 is about 14101.1621861462. The cubic root of 198842775 is about 583.6734497269.

The spelling of 198842775 in words is "one hundred ninety-eight million, eight hundred forty-two thousand, seven hundred seventy-five".