1166287276 has 24 divisors (see below), whose sum is σ = 2544627456. Its totient is φ = 454397520.

The previous prime is 1166287273. The next prime is 1166287327. The reversal of 1166287276 is 6727826611.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1166287273) 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 7 ways as a sum of consecutive naturals, for example, 1893016 + ... + 1893631.

It is an arithmetic number, because the mean of its divisors is an integer number (106026144).

Almost surely, 2^1166287276 is an apocalyptic number.

It is an amenable number.

1166287276 is an abundant number, since it is smaller than the sum of its proper divisors (1378340180).

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

1166287276 is a wasteful number, since it uses less digits than its factorization.

1166287276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786669 (or 3786667 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 1166287276 is about 34150.9483909305. The cubic root of 1166287276 is about 1052.6124744815.

It can be divided in two parts, 116628 and 7276, that added together give a square (123904 = 352²).

The spelling of 1166287276 in words is "one billion, one hundred sixty-six million, two hundred eighty-seven thousand, two hundred seventy-six".