1166275520 has 112 divisors (see below), whose sum is σ = 2877068160. Its totient is φ = 449961984.

The previous prime is 1166275511. The next prime is 1166275543. The reversal of 1166275520 is 255726611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1621721 + ... + 1622439.

Almost surely, 2^1166275520 is an apocalyptic number.

1166275520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166275520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1438534080).

1166275520 is an abundant number, since it is smaller than the sum of its proper divisors (1710792640).

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

1166275520 is a wasteful number, since it uses less digits than its factorization.

1166275520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1166275520 is about 34150.7762722899. The cubic root of 1166275520 is about 1052.6089377446.

The spelling of 1166275520 in words is "one billion, one hundred sixty-six million, two hundred seventy-five thousand, five hundred twenty".