1181206878 has 16 divisors (see below), whose sum is σ = 2374408080. Its totient is φ = 391736576.

The previous prime is 1181206847. The next prime is 1181206913. The reversal of 1181206878 is 8786021811.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 498483 + ... + 500846.

It is an arithmetic number, because the mean of its divisors is an integer number (148400505).

Almost surely, 2^1181206878 is an apocalyptic number.

1181206878 is an abundant number, since it is smaller than the sum of its proper divisors (1193201202).

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

1181206878 is a wasteful number, since it uses less digits than its factorization.

1181206878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999531.

The product of its (nonzero) digits is 43008, while the sum is 42.

The square root of 1181206878 is about 34368.6903736526. The cubic root of 1181206878 is about 1057.0819464314.

The spelling of 1181206878 in words is "one billion, one hundred eighty-one million, two hundred six thousand, eight hundred seventy-eight".