19420554980 has 12 divisors (see below), whose sum is σ = 40783165500. Its totient is φ = 7768221984.

The previous prime is 19420554929. The next prime is 19420555009. The reversal of 19420554980 is 8945502491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10860974656 + 8559580324 = 104216^2 + 92518^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485513855 + ... + 485513894.

It is an arithmetic number, because the mean of its divisors is an integer number (3398597125).

Almost surely, 2^19420554980 is an apocalyptic number.

19420554980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19420554980 is an abundant number, since it is smaller than the sum of its proper divisors (21362610520).

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

19420554980 is a wasteful number, since it uses less digits than its factorization.

19420554980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971027758 (or 971027756 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 19420554980 in words is "nineteen billion, four hundred twenty million, five hundred fifty-four thousand, nine hundred eighty".