1181008612 has 72 divisors (see below), whose sum is σ = 2573975040. Its totient is φ = 463916160.

The previous prime is 1181008607. The next prime is 1181008627. The reversal of 1181008612 is 2168001811.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 23 ways as a sum of consecutive naturals, for example, 311464 + ... + 315232.

Almost surely, 2^1181008612 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 1181008612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286987520).

1181008612 is an abundant number, since it is smaller than the sum of its proper divisors (1392966428).

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

1181008612 is a wasteful number, since it uses less digits than its factorization.

1181008612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849 (or 3828 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 1181008612 is about 34365.8058540754. The cubic root of 1181008612 is about 1057.0227992601.

The spelling of 1181008612 in words is "one billion, one hundred eighty-one million, eight thousand, six hundred twelve".