1166500100 has 18 divisors (see below), whose sum is σ = 2531305434. Its totient is φ = 466600000.

The previous prime is 1166500099. The next prime is 1166500103. The reversal of 1166500100 is 10056611.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11723776 + 1154776324 = 3424^2 + 33982^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1166500103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5832401 + ... + 5832600.

Almost surely, 2^1166500100 is an apocalyptic number.

1166500100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166500100 is an abundant number, since it is smaller than the sum of its proper divisors (1364805334).

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

1166500100 is a wasteful number, since it uses less digits than its factorization.

1166500100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11665015 (or 11665008 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1166500100 is about 34154.0641798308. The cubic root of 1166500100 is about 1052.6764974648.

Adding to 1166500100 its reverse (10056611), we get a palindrome (1176556711).

The spelling of 1166500100 in words is "one billion, one hundred sixty-six million, five hundred thousand, one hundred".