1155111166 has 16 divisors (see below), whose sum is σ = 1912958208. Its totient is φ = 518723800.

The previous prime is 1155111149. The next prime is 1155111179. The reversal of 1155111166 is 6611115511.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 314470 + ... + 318121.

It is an arithmetic number, because the mean of its divisors is an integer number (119559888).

Almost surely, 2^1155111166 is an apocalyptic number.

1155111166 is a deficient number, since it is larger than the sum of its proper divisors (757847042).

1155111166 is a wasteful number, since it uses less digits than its factorization.

1155111166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632687.

The product of its digits is 900, while the sum is 28.

The square root of 1155111166 is about 33986.9263982491. The cubic root of 1155111166 is about 1049.2394086675.

Adding to 1155111166 its reverse (6611115511), we get a palindrome (7766226677).

The spelling of 1155111166 in words is "one billion, one hundred fifty-five million, one hundred eleven thousand, one hundred sixty-six".