1181680386 has 8 divisors (see below), whose sum is σ = 2363360784. Its totient is φ = 393893460.

The previous prime is 1181680363. The next prime is 1181680397. The reversal of 1181680386 is 6830861811.

It is a sphenic number, since it is the product of 3 distinct primes.

1181680386 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98473360 + ... + 98473371.

It is an arithmetic number, because the mean of its divisors is an integer number (295420098).

Almost surely, 2^1181680386 is an apocalyptic number.

1181680386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1181680386 is a wasteful number, since it uses less digits than its factorization.

1181680386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196946736.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1181680386 is about 34375.5783369531. The cubic root of 1181680386 is about 1057.2231776584.

The spelling of 1181680386 in words is "one billion, one hundred eighty-one million, six hundred eighty thousand, three hundred eighty-six".