1171179984 has 80 divisors (see below), whose sum is σ = 3263041152. Its totient is φ = 359837184.

The previous prime is 1171179979. The next prime is 1171179991. The reversal of 1171179984 is 4899711711.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 852322 + ... + 853694.

Almost surely, 2^1171179984 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 1171179984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1631520576).

1171179984 is an abundant number, since it is smaller than the sum of its proper divisors (2091861168).

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

1171179984 is a wasteful number, since it uses less digits than its factorization.

1171179984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2758 counting only the distinct ones).

The product of its digits is 127008, while the sum is 48.

The square root of 1171179984 is about 34222.5069800563. The cubic root of 1171179984 is about 1054.0823640278.

The spelling of 1171179984 in words is "one billion, one hundred seventy-one million, one hundred seventy-nine thousand, nine hundred eighty-four".