1980081318 has 8 divisors (see below), whose sum is σ = 3960162648. Its totient is φ = 660027104.

The previous prime is 1980081287. The next prime is 1980081319. The reversal of 1980081318 is 8131800891.

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

1980081318 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980081319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165006771 + ... + 165006782.

It is an arithmetic number, because the mean of its divisors is an integer number (495020331).

Almost surely, 2^1980081318 is an apocalyptic number.

1980081318 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.

1980081318 is a wasteful number, since it uses less digits than its factorization.

1980081318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330013558.

The product of its (nonzero) digits is 13824, while the sum is 39.

The square root of 1980081318 is about 44498.1046562660. The cubic root of 1980081318 is about 1255.7244259138.

The spelling of 1980081318 in words is "one billion, nine hundred eighty million, eighty-one thousand, three hundred eighteen".