19542529471889 has 8 divisors (see below), whose sum is σ = 20632125452640. Its totient is φ = 18459037670976.

The previous prime is 19542529471853. The next prime is 19542529471891. The reversal of 19542529471889 is 98817492524591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19542529471889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19542529470889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1526038379 + ... + 1526051184.

It is an arithmetic number, because the mean of its divisors is an integer number (2579015681580).

Almost surely, 2^{19542529471889} is an apocalyptic number.

19542529471889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19542529471889 is a deficient number, since it is larger than the sum of its proper divisors (1089595980751).

19542529471889 is a wasteful number, since it uses less digits than its factorization.

19542529471889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052089919.

The product of its digits is 522547200, while the sum is 74.

The spelling of 19542529471889 in words is "nineteen trillion, five hundred forty-two billion, five hundred twenty-nine million, four hundred seventy-one thousand, eight hundred eighty-nine".