1181283372 has 96 divisors (see below), whose sum is σ = 3121675200. Its totient is φ = 386228736.

The previous prime is 1181283353. The next prime is 1181283379. The reversal of 1181283372 is 2733821811.

1181283372 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 283 + 372 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1181283379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2120518 + ... + 2121074.

It is an arithmetic number, because the mean of its divisors is an integer number (32517450).

Almost surely, 2^1181283372 is an apocalyptic number.

1181283372 is a gapful number since it is divisible by the number (12) 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 1181283372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560837600).

1181283372 is an abundant number, since it is smaller than the sum of its proper divisors (1940391828).

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

1181283372 is a wasteful number, since it uses less digits than its factorization.

1181283372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 904 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 1181283372 is about 34369.8031999021. The cubic root of 1181283372 is about 1057.1047645288.

The spelling of 1181283372 in words is "one billion, one hundred eighty-one million, two hundred eighty-three thousand, three hundred seventy-two".