1166459978 has 16 divisors (see below), whose sum is σ = 1759470336. Its totient is φ = 579976800.

The previous prime is 1166459941. The next prime is 1166460007. The reversal of 1166459978 is 8799546611.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596903 + ... + 598853.

It is an arithmetic number, because the mean of its divisors is an integer number (109966896).

Almost surely, 2^1166459978 is an apocalyptic number.

1166459978 is a deficient number, since it is larger than the sum of its proper divisors (593010358).

1166459978 is a wasteful number, since it uses less digits than its factorization.

1166459978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469.

The product of its digits is 3265920, while the sum is 56.

The square root of 1166459978 is about 34153.4768069080. The cubic root of 1166459978 is about 1052.6644283214.

The spelling of 1166459978 in words is "one billion, one hundred sixty-six million, four hundred fifty-nine thousand, nine hundred seventy-eight".