1166558180 has 24 divisors (see below), whose sum is σ = 2506745472. Its totient is φ = 455771232.

The previous prime is 1166558153. The next prime is 1166558227. The reversal of 1166558180 is 818556611.

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, 677372 + ... + 679091.

It is an arithmetic number, because the mean of its divisors is an integer number (104447728).

Almost surely, 2^1166558180 is an apocalyptic number.

1166558180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166558180 is an abundant number, since it is smaller than the sum of its proper divisors (1340187292).

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

1166558180 is a wasteful number, since it uses less digits than its factorization.

1166558180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356515 (or 1356513 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 1166558180 is about 34154.9144340899. The cubic root of 1166558180 is about 1052.6939680837.

The spelling of 1166558180 in words is "one billion, one hundred sixty-six million, five hundred fifty-eight thousand, one hundred eighty".