19428203540 has 48 divisors (see below), whose sum is σ = 41577338880. Its totient is φ = 7623742080.

The previous prime is 19428203539. The next prime is 19428203567. The reversal of 19428203540 is 4530282491.

It is a junction number, because it is equal to n+sod(n) for n = 19428203494 and 19428203503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446471 + ... + 488049.

It is an arithmetic number, because the mean of its divisors is an integer number (866194560).

Almost surely, 2^19428203540 is an apocalyptic number.

19428203540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19428203540 is an abundant number, since it is smaller than the sum of its proper divisors (22149135340).

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

19428203540 is a wasteful number, since it uses less digits than its factorization.

19428203540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42032 (or 42030 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 19428203540 in words is "nineteen billion, four hundred twenty-eight million, two hundred three thousand, five hundred forty".