1166147680 has 24 divisors (see below), whose sum is σ = 2755024272. Its totient is φ = 466459008.

The previous prime is 1166147651. The next prime is 1166147693. The reversal of 1166147680 is 867416611.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3644052 + ... + 3644371.

It is an arithmetic number, because the mean of its divisors is an integer number (114792678).

Almost surely, 2^1166147680 is an apocalyptic number.

1166147680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166147680 is an abundant number, since it is smaller than the sum of its proper divisors (1588876592).

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

1166147680 is an equidigital number, since it uses as much as digits as its factorization.

1166147680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7288438 (or 7288430 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1166147680 is about 34148.9045212288. The cubic root of 1166147680 is about 1052.5704761514.

The spelling of 1166147680 in words is "one billion, one hundred sixty-six million, one hundred forty-seven thousand, six hundred eighty".