19012484124889 has 2 divisors, whose sum is σ = 19012484124890. Its totient is φ = 19012484124888.

The previous prime is 19012484124871. The next prime is 19012484124899. The reversal of 19012484124889 is 98842148421091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17871629425225 + 1140854699664 = 4227485^2 + 1068108^2 .

It is a cyclic number.

It is not a de Polignac number, because 19012484124889 - 2¹⁹ = 19012483600601 is a prime.

It is a super-2 number, since 2×19012484124889² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19012484124899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9506242062444 + 9506242062445.

It is an arithmetic number, because the mean of its divisors is an integer number (9506242062445).

Almost surely, 2^{19012484124889} is an apocalyptic number.

It is an amenable number.

19012484124889 is a deficient number, since it is larger than the sum of its proper divisors (1).

19012484124889 is an equidigital number, since it uses as much as digits as its factorization.

19012484124889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10616832, while the sum is 61.

The spelling of 19012484124889 in words is "nineteen trillion, twelve billion, four hundred eighty-four million, one hundred twenty-four thousand, eight hundred eighty-nine".