191298195 has 96 divisors (see below), whose sum is σ = 388177920. Its totient is φ = 86123520.

The previous prime is 191298193. The next prime is 191298197. The reversal of 191298195 is 591892191.

It is an interprime number because it is at equal distance from previous prime (191298193) and next prime (191298197).

It is not a de Polignac number, because 191298195 - 2¹ = 191298193 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 191298195.

It is not an unprimeable number, because it can be changed into a prime (191298193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1068616 + ... + 1068794.

It is an arithmetic number, because the mean of its divisors is an integer number (4043520).

Almost surely, 2^191298195 is an apocalyptic number.

191298195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

191298195 is an abundant number, since it is smaller than the sum of its proper divisors (196879725).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191298195 is a wasteful number, since it uses less digits than its factorization.

191298195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 342 counting only the distinct ones).

The product of its digits is 58320, while the sum is 45.

The square root of 191298195 is about 13831.0590700785. The cubic root of 191298195 is about 576.1960685956.

The spelling of 191298195 in words is "one hundred ninety-one million, two hundred ninety-eight thousand, one hundred ninety-five".