1181952772 has 96 divisors (see below), whose sum is σ = 2795756544. Its totient is φ = 422236800.

The previous prime is 1181952749. The next prime is 1181952799. The reversal of 1181952772 is 2772591811.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651747 + ... + 653557.

It is an arithmetic number, because the mean of its divisors is an integer number (29122464).

Almost surely, 2^1181952772 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 1181952772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397878272).

1181952772 is an abundant number, since it is smaller than the sum of its proper divisors (1613803772).

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

1181952772 is a wasteful number, since it uses less digits than its factorization.

1181952772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 2007 counting only the distinct ones).

The product of its digits is 70560, while the sum is 43.

The square root of 1181952772 is about 34379.5400201922. The cubic root of 1181952772 is about 1057.3044039843.

The spelling of 1181952772 in words is "one billion, one hundred eighty-one million, nine hundred fifty-two thousand, seven hundred seventy-two".