19312389319489 has 16 divisors (see below), whose sum is σ = 23248873676800. Its totient is φ = 15671492170704.

The previous prime is 19312389319471. The next prime is 19312389319547. The reversal of 19312389319489 is 98491398321391.

It is a cyclic number.

It is not a de Polignac number, because 19312389319489 - 2¹⁵ = 19312389286721 is a prime.

It is a super-2 number, since 2×19312389319489² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19312389319409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49568097 + ... + 49956190.

It is an arithmetic number, because the mean of its divisors is an integer number (1453054604800).

Almost surely, 2^{19312389319489} is an apocalyptic number.

19312389319489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19312389319489 is a deficient number, since it is larger than the sum of its proper divisors (3936484357311).

19312389319489 is a wasteful number, since it uses less digits than its factorization.

19312389319489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99525772.

The product of its digits is 90699264, while the sum is 70.

The spelling of 19312389319489 in words is "nineteen trillion, three hundred twelve billion, three hundred eighty-nine million, three hundred nineteen thousand, four hundred eighty-nine".