1166998056 has 128 divisors (see below), whose sum is σ = 3445390080. Its totient is φ = 322430976.

The previous prime is 1166997983. The next prime is 1166998057. The reversal of 1166998056 is 6508996611.

It is not an unprimeable number, because it can be changed into a prime (1166998057) 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, 1224076 + ... + 1225028.

It is an arithmetic number, because the mean of its divisors is an integer number (26917110).

Almost surely, 2^1166998056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166998056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722695040).

1166998056 is an abundant number, since it is smaller than the sum of its proper divisors (2278392024).

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

1166998056 is a wasteful number, since it uses less digits than its factorization.

1166998056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 1166998056 is about 34161.3532518839. The cubic root of 1166998056 is about 1052.8262651351.

The spelling of 1166998056 in words is "one billion, one hundred sixty-six million, nine hundred ninety-eight thousand, fifty-six".