1181678814 has 16 divisors (see below), whose sum is σ = 2625953040. Its totient is φ = 393892920.

The previous prime is 1181678803. The next prime is 1181678821. The reversal of 1181678814 is 4188761811.

It is a self number, because there is not a number n which added to its sum of digits gives 1181678814.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10941417 + ... + 10941524.

It is an arithmetic number, because the mean of its divisors is an integer number (164122065).

Almost surely, 2^1181678814 is an apocalyptic number.

1181678814 is an abundant number, since it is smaller than the sum of its proper divisors (1444274226).

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

1181678814 is a wasteful number, since it uses less digits than its factorization.

1181678814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21882952 (or 21882946 counting only the distinct ones).

The product of its digits is 86016, while the sum is 45.

The square root of 1181678814 is about 34375.5554718757. Note that the first 3 decimals coincide. The cubic root of 1181678814 is about 1057.2227088470. Note that the first 3 decimals are identical.

The spelling of 1181678814 in words is "one billion, one hundred eighty-one million, six hundred seventy-eight thousand, eight hundred fourteen".