1198171 has 16 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 1033344.

The previous prime is 1198157. The next prime is 1198187. The reversal of 1198171 is 1718911.

It is not a de Polignac number, because 1198171 - 2¹¹ = 1196123 is a prime.

It is a super-2 number, since 2×1198171² = 2871227490482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1198151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22581 + ... + 22633.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2^1198171 is an apocalyptic number.

1198171 is a deficient number, since it is larger than the sum of its proper divisors (180773).

1198171 is a wasteful number, since it uses less digits than its factorization.

1198171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150.

The product of its digits is 504, while the sum is 28.

The square root of 1198171 is about 1094.6099762016. The cubic root of 1198171 is about 106.2118405066.

It can be divided in two parts, 1198 and 171, that added together give a square (1369 = 37²).

The spelling of 1198171 in words is "one million, one hundred ninety-eight thousand, one hundred seventy-one".