1980223916 has 24 divisors (see below), whose sum is σ = 3944795904. Its totient is φ = 860966480.

The previous prime is 1980223901. The next prime is 1980223951. The reversal of 1980223916 is 6193220891.

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, 977360 + ... + 979383.

It is an arithmetic number, because the mean of its divisors is an integer number (164366496).

Almost surely, 2^1980223916 is an apocalyptic number.

It is an amenable number.

1980223916 is a deficient number, since it is larger than the sum of its proper divisors (1964571988).

1980223916 is a wasteful number, since it uses less digits than its factorization.

1980223916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956781 (or 1956779 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 1980223916 is about 44499.7069203832. The cubic root of 1980223916 is about 1255.7545693716.

The spelling of 1980223916 in words is "one billion, nine hundred eighty million, two hundred twenty-three thousand, nine hundred sixteen".