1155166500 has 48 divisors (see below), whose sum is σ = 3363849216. Its totient is φ = 308044000.

The previous prime is 1155166477. The next prime is 1155166549. The reversal of 1155166500 is 56615511.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 383556 + ... + 386555.

It is an arithmetic number, because the mean of its divisors is an integer number (70080192).

Almost surely, 2^1155166500 is an apocalyptic number.

1155166500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155166500 is an abundant number, since it is smaller than the sum of its proper divisors (2208682716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155166500 is a wasteful number, since it uses less digits than its factorization.

1155166500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770133 (or 770121 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1155166500 is about 33987.7404368104. The cubic root of 1155166500 is about 1049.2561625200.

It can be divided in two parts, 115 and 5166500, that added together give a palindrome (5166615).

The spelling of 1155166500 in words is "one billion, one hundred fifty-five million, one hundred sixty-six thousand, five hundred".