1141766891 has 2 divisors, whose sum is σ = 1141766892. Its totient is φ = 1141766890.

The previous prime is 1141766881. The next prime is 1141766909. The reversal of 1141766891 is 1986671411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1141766891 - 2¹⁴ = 1141750507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1141766861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570883445 + 570883446.

It is an arithmetic number, because the mean of its divisors is an integer number (570883446).

Almost surely, 2^1141766891 is an apocalyptic number.

1141766891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141766891 is an equidigital number, since it uses as much as digits as its factorization.

1141766891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 1141766891 is about 33790.0412991757. The cubic root of 1141766891 is about 1045.1833476360.

The spelling of 1141766891 in words is "one billion, one hundred forty-one million, seven hundred sixty-six thousand, eight hundred ninety-one".