1980398022 has 16 divisors (see below), whose sum is σ = 3965701680. Its totient is φ = 659315072.

The previous prime is 1980397997. The next prime is 1980398033. The reversal of 1980398022 is 2208930891.

It is a congruent number.

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, 199143 + ... + 208850.

It is an arithmetic number, because the mean of its divisors is an integer number (247856355).

Almost surely, 2^1980398022 is an apocalyptic number.

1980398022 is an abundant number, since it is smaller than the sum of its proper divisors (1985303658).

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

1980398022 is a wasteful number, since it uses less digits than its factorization.

1980398022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408807.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1980398022 is about 44501.6631374604. The cubic root of 1980398022 is about 1255.7913712700.

The spelling of 1980398022 in words is "one billion, nine hundred eighty million, three hundred ninety-eight thousand, twenty-two".