1166478863 has 8 divisors (see below), whose sum is σ = 1275028560. Its totient is φ = 1058346880.

The previous prime is 1166478857. The next prime is 1166478893. The reversal of 1166478863 is 3688746611.

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 1166478863 - 2¹² = 1166474767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166478893) 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, 98570 + ... + 109767.

It is an arithmetic number, because the mean of its divisors is an integer number (159378570).

Almost surely, 2^1166478863 is an apocalyptic number.

1166478863 is a deficient number, since it is larger than the sum of its proper divisors (108549697).

1166478863 is a wasteful number, since it uses less digits than its factorization.

1166478863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208857.

The product of its digits is 1161216, while the sum is 50.

The square root of 1166478863 is about 34153.7532783734. The cubic root of 1166478863 is about 1052.6701091737.

The spelling of 1166478863 in words is "one billion, one hundred sixty-six million, four hundred seventy-eight thousand, eight hundred sixty-three".