19528041980 has 24 divisors (see below), whose sum is σ = 41070956640. Its totient is φ = 7799394240.

The previous prime is 19528041941. The next prime is 19528041991. The reversal of 19528041980 is 8914082591.

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, 725360 + ... + 751799.

It is an arithmetic number, because the mean of its divisors is an integer number (1711289860).

Almost surely, 2^19528041980 is an apocalyptic number.

19528041980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19528041980 is an abundant number, since it is smaller than the sum of its proper divisors (21542914660).

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

19528041980 is a wasteful number, since it uses less digits than its factorization.

19528041980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477829 (or 1477827 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 19528041980 in words is "nineteen billion, five hundred twenty-eight million, forty-one thousand, nine hundred eighty".