1166860580 has 24 divisors (see below), whose sum is σ = 2451950592. Its totient is φ = 466450272.

The previous prime is 1166860567. The next prime is 1166860609. The reversal of 1166860580 is 850686611.

It is a happy number.

It is a super-2 number, since 2×1166860580² = 2723127226315872800, which contains 22 as substring.

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, 15719 + ... + 50801.

It is an arithmetic number, because the mean of its divisors is an integer number (102164608).

Almost surely, 2^1166860580 is an apocalyptic number.

1166860580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166860580 is an abundant number, since it is smaller than the sum of its proper divisors (1285090012).

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

1166860580 is a wasteful number, since it uses less digits than its factorization.

1166860580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36755 (or 36753 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 1166860580 is about 34159.3410357987. The cubic root of 1166860580 is about 1052.7849214423.

The spelling of 1166860580 in words is "one billion, one hundred sixty-six million, eight hundred sixty thousand, five hundred eighty".