1980595922 has 6 divisors (see below), whose sum is σ = 2970988293. Its totient is φ = 990266492.

The previous prime is 1980595913. The next prime is 1980595927. The reversal of 1980595922 is 2295950891.

It can be written as a sum of positive squares in 2 ways, for example, as 1979271121 + 1324801 = 44489^2 + 1151^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=31469.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980595927) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 47204 + ... + 78672.

Almost surely, 2^1980595922 is an apocalyptic number.

1980595922 is a deficient number, since it is larger than the sum of its proper divisors (990392371).

1980595922 is an frugal number, since it uses more digits than its factorization.

1980595922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62940 (or 31471 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 1980595922 is about 44503.8865943189. The cubic root of 1980595922 is about 1255.8332000391.

Multiplying 1980595922 by its sum of digits (50), we get a square (99029796100 = 314690²).

The spelling of 1980595922 in words is "one billion, nine hundred eighty million, five hundred ninety-five thousand, nine hundred twenty-two".