1980850911 has 8 divisors (see below), whose sum is σ = 2844298800. Its totient is φ = 1218985152.

The previous prime is 1980850903. The next prime is 1980850933. The reversal of 1980850911 is 1190580891.

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

It is not a de Polignac number, because 1980850911 - 2³ = 1980850903 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980850901) by changing a digit.

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, 25395486 + ... + 25395563.

It is an arithmetic number, because the mean of its divisors is an integer number (355537350).

Almost surely, 2^1980850911 is an apocalyptic number.

1980850911 is a deficient number, since it is larger than the sum of its proper divisors (863447889).

1980850911 is a wasteful number, since it uses less digits than its factorization.

1980850911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50791065.

The product of its (nonzero) digits is 25920, while the sum is 42.

The square root of 1980850911 is about 44506.7512968538. The cubic root of 1980850911 is about 1255.8870912118.

The spelling of 1980850911 in words is "one billion, nine hundred eighty million, eight hundred fifty thousand, nine hundred eleven".