1171066816 has 28 divisors (see below), whose sum is σ = 2377883992. Its totient is φ = 571915008.

The previous prime is 1171066807. The next prime is 1171066823. The reversal of 1171066816 is 6186601711.

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, 210015 + ... + 215518.

Almost surely, 2^1171066816 is an apocalyptic number.

1171066816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1171066816 is an abundant number, since it is smaller than the sum of its proper divisors (1206817176).

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

1171066816 is an equidigital number, since it uses as much as digits as its factorization.

1171066816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425588 (or 425578 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1171066816 is about 34220.8535252995. The cubic root of 1171066816 is about 1054.0484118778.

The spelling of 1171066816 in words is "one billion, one hundred seventy-one million, sixty-six thousand, eight hundred sixteen".