1181323264 has 104 divisors (see below), whose sum is σ = 2609062848. Its totient is φ = 530350080.

The previous prime is 1181323243. The next prime is 1181323279. The reversal of 1181323264 is 4623231811.

It is a super-2 number, since 2×1181323264² = 2791049308135227392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7073709 + ... + 7073875.

Almost surely, 2^1181323264 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 1181323264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304531424).

1181323264 is an abundant number, since it is smaller than the sum of its proper divisors (1427739584).

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

1181323264 is a wasteful number, since it uses less digits than its factorization.

1181323264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 337 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 1181323264 is about 34370.3835300103. The cubic root of 1181323264 is about 1057.1166638889.

The spelling of 1181323264 in words is "one billion, one hundred eighty-one million, three hundred twenty-three thousand, two hundred sixty-four".