1171730880 has 112 divisors (see below), whose sum is σ = 4133636640. Its totient is φ = 312459264.

The previous prime is 1171730873. The next prime is 1171730887. The reversal of 1171730880 is 880371711.

It is an interprime number because it is at equal distance from previous prime (1171730873) and next prime (1171730887).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171730887) 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, 59169 + ... + 76448.

It is an arithmetic number, because the mean of its divisors is an integer number (36907470).

Almost surely, 2^1171730880 is an apocalyptic number.

1171730880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171730880 is an abundant number, since it is smaller than the sum of its proper divisors (2961905760).

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

1171730880 is a wasteful number, since it uses less digits than its factorization.

1171730880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135643 (or 135627 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The square root of 1171730880 is about 34230.5547720162. The cubic root of 1171730880 is about 1054.2476101164.

The spelling of 1171730880 in words is "one billion, one hundred seventy-one million, seven hundred thirty thousand, eight hundred eighty".