19171727340 has 48 divisors (see below), whose sum is σ = 53687512032. Its totient is φ = 5111824896.

The previous prime is 19171727297. The next prime is 19171727353. The reversal of 19171727340 is 4372717191.

It is a junction number, because it is equal to n+sod(n) for n = 19171727292 and 19171727301.

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, 657552 + ... + 686088.

It is an arithmetic number, because the mean of its divisors is an integer number (1118489834).

Almost surely, 2^19171727340 is an apocalyptic number.

19171727340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19171727340 is an abundant number, since it is smaller than the sum of its proper divisors (34515784692).

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

19171727340 is a wasteful number, since it uses less digits than its factorization.

19171727340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39746 (or 39744 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 42.

The spelling of 19171727340 in words is "nineteen billion, one hundred seventy-one million, seven hundred twenty-seven thousand, three hundred forty".