19244659489 has 4 divisors (see below), whose sum is σ = 20994174000. Its totient is φ = 17495144980.

The previous prime is 19244659459. The next prime is 19244659501. The reversal of 19244659489 is 98495644291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19244659489 - 2⁵ = 19244659457 is a prime.

It is a super-2 number, since 2×19244659489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19244659439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874757239 + ... + 874757260.

It is an arithmetic number, because the mean of its divisors is an integer number (5248543500).

Almost surely, 2^19244659489 is an apocalyptic number.

It is an amenable number.

19244659489 is a deficient number, since it is larger than the sum of its proper divisors (1749514511).

19244659489 is a wasteful number, since it uses less digits than its factorization.

19244659489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749514510.

The product of its digits is 22394880, while the sum is 61.

The spelling of 19244659489 in words is "nineteen billion, two hundred forty-four million, six hundred fifty-nine thousand, four hundred eighty-nine".