198170749 has 12 divisors (see below), whose sum is σ = 230883744. Its totient is φ = 169596504.

The previous prime is 198170747. The next prime is 198170759. The reversal of 198170749 is 947071891.

It is not a de Polignac number, because 198170749 - 2¹ = 198170747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198170699 and 198170708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198170747) 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 in 11 ways as a sum of consecutive naturals, for example, 32842 + ... + 38404.

It is an arithmetic number, because the mean of its divisors is an integer number (19240312).

Almost surely, 2^198170749 is an apocalyptic number.

It is an amenable number.

198170749 is a deficient number, since it is larger than the sum of its proper divisors (32712995).

198170749 is an equidigital number, since it uses as much as digits as its factorization.

198170749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304 (or 6297 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 198170749 is about 14077.3132734908. The cubic root of 198170749 is about 583.0151633797.

The spelling of 198170749 in words is "one hundred ninety-eight million, one hundred seventy thousand, seven hundred forty-nine".