1198081 has 2 divisors, whose sum is σ = 1198082. Its totient is φ = 1198080.

The previous prime is 1198073. The next prime is 1198103. The reversal of 1198081 is 1808911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 147456 = 1025^2 + 384^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198081 - 2³ = 1198073 is a prime.

It is a super-2 number, since 2×1198081² = 2870796165122, which contains 22 as substring.

1198081 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1198051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599040 + 599041.

It is an arithmetic number, because the mean of its divisors is an integer number (599041).

It is a Proth number, since it is equal to 585 ⋅ 2¹¹ + 1 and 585 < 2¹¹.

2^1198081 is an apocalyptic number.

It is an amenable number.

1198081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198081 is an equidigital number, since it uses as much as digits as its factorization.

1198081 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1198081 is about 1094.5688648961. The cubic root of 1198081 is about 106.2091810908.

The spelling of 1198081 in words is "one million, one hundred ninety-eight thousand, eighty-one".