1178797284 has 144 divisors (see below), whose sum is σ = 3484440960. Its totient is φ = 329080320.

The previous prime is 1178797283. The next prime is 1178797303. The reversal of 1178797284 is 4827978711.

It is a self number, because there is not a number n which added to its sum of digits gives 1178797284.

It is not an unprimeable number, because it can be changed into a prime (1178797283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2556814 + ... + 2557274.

Almost surely, 2^1178797284 is an apocalyptic number.

1178797284 is a gapful number since it is divisible by the number (14) 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 1178797284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742220480).

1178797284 is an abundant number, since it is smaller than the sum of its proper divisors (2305643676).

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

1178797284 is a wasteful number, since it uses less digits than its factorization.

1178797284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 685 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 54.

The square root of 1178797284 is about 34333.6174033556. The cubic root of 1178797284 is about 1056.3626616801.

The spelling of 1178797284 in words is "one billion, one hundred seventy-eight million, seven hundred ninety-seven thousand, two hundred eighty-four".