19363669773889 has 27 divisors (see below), whose sum is σ = 22682651223267. Its totient is φ = 16482131508528.

The previous prime is 19363669773887. The next prime is 19363669773901. The reversal of 19363669773889 is 98837796636391.

The square root of 19363669773889 is 4400417.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2268587229489 + 17095082544400 = 1506183^2 + 4134620^2 .

It is not a de Polignac number, because 19363669773889 - 2¹ = 19363669773887 is a prime.

It is a super-2 number, since 2×19363669773889² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19363669773881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4589632822 + ... + 4589637040.

Almost surely, 2^{19363669773889} is an apocalyptic number.

19363669773889 is the 4400417-th square number.

19363669773889 is the 2200209-th centered octagonal number.

It is an amenable number.

19363669773889 is a deficient number, since it is larger than the sum of its proper divisors (3318981449378).

19363669773889 is an frugal number, since it uses more digits than its factorization.

19363669773889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750 (or 4375 counting only the distinct ones).

The product of its digits is 13332791808, while the sum is 85.

The spelling of 19363669773889 in words is "nineteen trillion, three hundred sixty-three billion, six hundred sixty-nine million, seven hundred seventy-three thousand, eight hundred eighty-nine".