1115556166 has 32 divisors (see below), whose sum is σ = 1836043200. Its totient is φ = 506647680.

The previous prime is 1115556157. The next prime is 1115556193. The reversal of 1115556166 is 6616555111.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 74520 + ... + 88228.

It is an arithmetic number, because the mean of its divisors is an integer number (57376350).

Almost surely, 2^1115556166 is an apocalyptic number.

1115556166 is a deficient number, since it is larger than the sum of its proper divisors (720487034).

1115556166 is a wasteful number, since it uses less digits than its factorization.

1115556166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13824.

The product of its digits is 27000, while the sum is 37.

The square root of 1115556166 is about 33399.9426047411. The cubic root of 1115556166 is about 1037.1235128093.

The spelling of 1115556166 in words is "one billion, one hundred fifteen million, five hundred fifty-six thousand, one hundred sixty-six".