1166881829 has 2 divisors, whose sum is σ = 1166881830. Its totient is φ = 1166881828.

The previous prime is 1166881823. The next prime is 1166881843. The reversal of 1166881829 is 9281886611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1164856900 + 2024929 = 34130^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166881829 - 2⁴ = 1166881813 is a prime.

It is a super-2 number, since 2×1166881829² = 2723226405700770482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166881823) by changing a digit.

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, 583440914 + 583440915.

It is an arithmetic number, because the mean of its divisors is an integer number (583440915).

Almost surely, 2^1166881829 is an apocalyptic number.

It is an amenable number.

1166881829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166881829 is an equidigital number, since it uses as much as digits as its factorization.

1166881829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 50.

The square root of 1166881829 is about 34159.6520620454. The cubic root of 1166881829 is about 1052.7913119490.

The spelling of 1166881829 in words is "one billion, one hundred sixty-six million, eight hundred eighty-one thousand, eight hundred twenty-nine".