1166884623 has 20 divisors (see below), whose sum is σ = 1776019608. Its totient is φ = 763242480.

The previous prime is 1166884603. The next prime is 1166884637. The reversal of 1166884623 is 3264886611.

1166884623 is a `hidden beast` number, since 1 + 16 + 6 + 8 + 8 + 4 + 623 = 666.

It is not a de Polignac number, because 1166884623 - 2⁹ = 1166884111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166884603) 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 in 19 ways as a sum of consecutive naturals, for example, 131613 + ... + 140198.

Almost surely, 2^1166884623 is an apocalyptic number.

1166884623 is a deficient number, since it is larger than the sum of its proper divisors (609134985).

1166884623 is an equidigital number, since it uses as much as digits as its factorization.

1166884623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271876 (or 271867 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1166884623 is about 34159.6929582220. The cubic root of 1166884623 is about 1052.7921522216.

The spelling of 1166884623 in words is "one billion, one hundred sixty-six million, eight hundred eighty-four thousand, six hundred twenty-three".