1171988480 has 224 divisors, whose sum is σ = 3170700288. Its totient is φ = 412876800.

The previous prime is 1171988479. The next prime is 1171988497. The reversal of 1171988480 is 848891711.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 16506845 + ... + 16506915.

It is an arithmetic number, because the mean of its divisors is an integer number (14154912).

Almost surely, 2^1171988480 is an apocalyptic number.

1171988480 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 1171988480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585350144).

1171988480 is an abundant number, since it is smaller than the sum of its proper divisors (1998711808).

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

1171988480 is an equidigital number, since it uses as much as digits as its factorization.

1171988480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 47.

The square root of 1171988480 is about 34234.3172854374. The cubic root of 1171988480 is about 1054.3248617248.

The spelling of 1171988480 in words is "one billion, one hundred seventy-one million, nine hundred eighty-eight thousand, four hundred eighty".