19193242489 has 8 divisors (see below), whose sum is σ = 19517811840. Its totient is φ = 18870180000.

The previous prime is 19193242451. The next prime is 19193242501. The reversal of 19193242489 is 98424239191.

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-19193242489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19193242429) 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, 351012 + ... + 401989.

It is an arithmetic number, because the mean of its divisors is an integer number (2439726480).

Almost surely, 2^19193242489 is an apocalyptic number.

It is an amenable number.

19193242489 is a deficient number, since it is larger than the sum of its proper divisors (324569351).

19193242489 is an equidigital number, since it uses as much as digits as its factorization.

19193242489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753431.

The product of its digits is 1119744, while the sum is 52.

The spelling of 19193242489 in words is "nineteen billion, one hundred ninety-three million, two hundred forty-two thousand, four hundred eighty-nine".