1166216576 has 32 divisors (see below), whose sum is σ = 2655227280. Its totient is φ = 499806720.

The previous prime is 1166216563. The next prime is 1166216591. The reversal of 1166216576 is 6756126611.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1166216576² = 2720122204274327552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649895 + ... + 651686.

Almost surely, 2^1166216576 is an apocalyptic number.

1166216576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1166216576 is an abundant number, since it is smaller than the sum of its proper divisors (1489010704).

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

1166216576 is an equidigital number, since it uses as much as digits as its factorization.

1166216576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301602 (or 1301590 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 1166216576 is about 34149.9132648972. The cubic root of 1166216576 is about 1052.5912043630.

The spelling of 1166216576 in words is "one billion, one hundred sixty-six million, two hundred sixteen thousand, five hundred seventy-six".