1115166505 has 4 divisors (see below), whose sum is σ = 1338199812. Its totient is φ = 892133200.

The previous prime is 1115166499. The next prime is 1115166557. The reversal of 1115166505 is 5056615111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162333081 + 952833424 = 12741^2 + 30868^2 .

It is not a de Polignac number, because 1115166505 - 2¹³ = 1115158313 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 111516646 + ... + 111516655.

It is an arithmetic number, because the mean of its divisors is an integer number (334549953).

Almost surely, 2^1115166505 is an apocalyptic number.

It is an amenable number.

1115166505 is a deficient number, since it is larger than the sum of its proper divisors (223033307).

1115166505 is an equidigital number, since it uses as much as digits as its factorization.

1115166505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223033306.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1115166505 is about 33394.1088367395. The cubic root of 1115166505 is about 1037.0027438571.

The spelling of 1115166505 in words is "one billion, one hundred fifteen million, one hundred sixty-six thousand, five hundred five".