1166253443 has 2 divisors, whose sum is σ = 1166253444. Its totient is φ = 1166253442.

The previous prime is 1166253401. The next prime is 1166253481. The reversal of 1166253443 is 3443526611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166253443 - 2¹⁰ = 1166252419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166253493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583126721 + 583126722.

It is an arithmetic number, because the mean of its divisors is an integer number (583126722).

Almost surely, 2^1166253443 is an apocalyptic number.

1166253443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166253443 is an equidigital number, since it uses as much as digits as its factorization.

1166253443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 1166253443 is about 34150.4530423829. The cubic root of 1166253443 is about 1052.6022959195.

The spelling of 1166253443 in words is "one billion, one hundred sixty-six million, two hundred fifty-three thousand, four hundred forty-three".