1166118558 has 32 divisors (see below), whose sum is σ = 2545817472. Its totient is φ = 353152800.

The previous prime is 1166118557. The next prime is 1166118581. The reversal of 1166118558 is 8558116611.

It is a super-3 number, since 3×1166118558³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166118557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127788 + ... + 136608.

It is an arithmetic number, because the mean of its divisors is an integer number (79556796).

Almost surely, 2^1166118558 is an apocalyptic number.

1166118558 is an abundant number, since it is smaller than the sum of its proper divisors (1379698914).

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

1166118558 is a wasteful number, since it uses less digits than its factorization.

1166118558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10840.

The product of its digits is 57600, while the sum is 42.

The square root of 1166118558 is about 34148.4781212868. The cubic root of 1166118558 is about 1052.5617141930.

The spelling of 1166118558 in words is "one billion, one hundred sixty-six million, one hundred eighteen thousand, five hundred fifty-eight".