1166594091 has 32 divisors (see below), whose sum is σ = 1766688000. Its totient is φ = 678803328.

The previous prime is 1166594083. The next prime is 1166594101. The reversal of 1166594091 is 1904956611.

It is not a de Polignac number, because 1166594091 - 2³ = 1166594083 is a prime.

It is a super-2 number, since 2×1166594091² = 2721883546312232562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166594021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487125 + ... + 489513.

It is an arithmetic number, because the mean of its divisors is an integer number (55209000).

Almost surely, 2^1166594091 is an apocalyptic number.

1166594091 is a deficient number, since it is larger than the sum of its proper divisors (600093909).

1166594091 is a wasteful number, since it uses less digits than its factorization.

1166594091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1166594091 is about 34155.4401376999. The cubic root of 1166594091 is about 1052.7047699182.

The spelling of 1166594091 in words is "one billion, one hundred sixty-six million, five hundred ninety-four thousand, ninety-one".