1146181 has 4 divisors (see below), whose sum is σ = 1148364. Its totient is φ = 1144000.

The previous prime is 1146179. The next prime is 1146217. The reversal of 1146181 is 1816411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62500 + 1083681 = 250^2 + 1041^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146181 - 2¹ = 1146179 is a prime.

It is a super-2 number, since 2×1146181² = 2627461769522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1146181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (287091).

2^1146181 is an apocalyptic number.

It is an amenable number.

1146181 is a deficient number, since it is larger than the sum of its proper divisors (2183).

1146181 is an equidigital number, since it uses as much as digits as its factorization.

1146181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182.

The product of its digits is 192, while the sum is 22.

The square root of 1146181 is about 1070.5984307853. The cubic root of 1146181 is about 104.6528520225.

The spelling of 1146181 in words is "one million, one hundred forty-six thousand, one hundred eighty-one".