1181335012 has 36 divisors (see below), whose sum is σ = 2442118896. Its totient is φ = 495661920.

The previous prime is 1181334977. The next prime is 1181335019. The reversal of 1181335012 is 2105331811.

It is not an unprimeable number, because it can be changed into a prime (1181335019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71998 + ... + 86869.

It is an arithmetic number, because the mean of its divisors is an integer number (67836636).

Almost surely, 2^1181335012 is an apocalyptic number.

It is an amenable number.

1181335012 is an abundant number, since it is smaller than the sum of its proper divisors (1260783884).

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

1181335012 is a wasteful number, since it uses less digits than its factorization.

1181335012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158908 (or 158893 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1181335012 is about 34370.5544325372. The cubic root of 1181335012 is about 1057.1201681415.

Adding to 1181335012 its reverse (2105331811), we get a palindrome (3286666823).

The spelling of 1181335012 in words is "one billion, one hundred eighty-one million, three hundred thirty-five thousand, twelve".