1166544505 has 32 divisors (see below), whose sum is σ = 1735292160. Its totient is φ = 734484480.

The previous prime is 1166544461. The next prime is 1166544551. The reversal of 1166544505 is 5054456611.

It is not a de Polignac number, because 1166544505 - 2¹⁵ = 1166511737 is a prime.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 486 + ... + 48304.

It is an arithmetic number, because the mean of its divisors is an integer number (54227880).

Almost surely, 2^1166544505 is an apocalyptic number.

It is an amenable number.

1166544505 is a deficient number, since it is larger than the sum of its proper divisors (568747655).

1166544505 is a wasteful number, since it uses less digits than its factorization.

1166544505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47889.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 1166544505 is about 34154.7142426928. The cubic root of 1166544505 is about 1052.6898546594.

The spelling of 1166544505 in words is "one billion, one hundred sixty-six million, five hundred forty-four thousand, five hundred five".