1081198 has 4 divisors (see below), whose sum is σ = 1621800. Its totient is φ = 540598.

The previous prime is 1081163. The next prime is 1081219. The reversal of 1081198 is 8911801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8911801 = 41 ⋅217361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270298 + ... + 270301.

It is an arithmetic number, because the mean of its divisors is an integer number (405450).

2^1081198 is an apocalyptic number.

1081198 is a deficient number, since it is larger than the sum of its proper divisors (540602).

1081198 is an equidigital number, since it uses as much as digits as its factorization.

1081198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540601.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 1081198 is about 1039.8067128077. The cubic root of 1081198 is about 102.6364789153.

Adding to 1081198 its reverse (8911801), we get a palindrome (9992999).

The spelling of 1081198 in words is "one million, eighty-one thousand, one hundred ninety-eight".