1181198 has 4 divisors (see below), whose sum is σ = 1771800. Its totient is φ = 590598.

The previous prime is 1181197. The next prime is 1181203. The reversal of 1181198 is 8911811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8911811 = 47 ⋅189613.

It is a self number, because there is not a number n which added to its sum of digits gives 1181198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295298 + ... + 295301.

It is an arithmetic number, because the mean of its divisors is an integer number (442950).

2^1181198 is an apocalyptic number.

1181198 is a deficient number, since it is larger than the sum of its proper divisors (590602).

1181198 is an equidigital number, since it uses as much as digits as its factorization.

1181198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590601.

The product of its digits is 576, while the sum is 29.

The square root of 1181198 is about 1086.8293334282. The cubic root of 1181198 is about 105.7079298067.

The spelling of 1181198 in words is "one million, one hundred eighty-one thousand, one hundred ninety-eight".