19790322620 has 12 divisors (see below), whose sum is σ = 41559677544. Its totient is φ = 7916129040.

The previous prime is 19790322611. The next prime is 19790322683. The reversal of 19790322620 is 2622309791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494758046 + ... + 494758085.

It is an arithmetic number, because the mean of its divisors is an integer number (3463306462).

Almost surely, 2^19790322620 is an apocalyptic number.

19790322620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19790322620 is an abundant number, since it is smaller than the sum of its proper divisors (21769354924).

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

19790322620 is a wasteful number, since it uses less digits than its factorization.

19790322620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989516140 (or 989516138 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 19790322620 in words is "nineteen billion, seven hundred ninety million, three hundred twenty-two thousand, six hundred twenty".