1166980009 has 8 divisors (see below), whose sum is σ = 1268950592. Its totient is φ = 1066752720.

The previous prime is 1166979953. The next prime is 1166980033. The reversal of 1166980009 is 9000896611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166980009 - 2²⁷ = 1032762281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166980099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434427 + ... + 437104.

It is an arithmetic number, because the mean of its divisors is an integer number (158618824).

Almost surely, 2^1166980009 is an apocalyptic number.

It is an amenable number.

1166980009 is a deficient number, since it is larger than the sum of its proper divisors (101970583).

1166980009 is a wasteful number, since it uses less digits than its factorization.

1166980009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871647.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1166980009 is about 34161.0891073455. The cubic root of 1166980009 is about 1052.8208379757.

The spelling of 1166980009 in words is "one billion, one hundred sixty-six million, nine hundred eighty thousand, nine".