19674831289 has 27 divisors (see below), whose sum is σ = 21577148397. Its totient is φ = 17936221824.

The previous prime is 19674831277. The next prime is 19674831307. The reversal of 19674831289 is 98213847691.

The square root of 19674831289 is 140267.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9152174889 + 10522656400 = 95667^2 + 102580^2 .

It is not a de Polignac number, because 19674831289 - 2¹⁹ = 19674307001 is a prime.

It is a super-2 number, since 2×19674831289² (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 (19674835289) 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 26 ways as a sum of consecutive naturals, for example, 88227832 + ... + 88228054.

Almost surely, 2^19674831289 is an apocalyptic number.

19674831289 is the 140267-th square number.

19674831289 is the 70134-th centered octagonal number.

It is an amenable number.

19674831289 is a deficient number, since it is larger than the sum of its proper divisors (1902317108).

19674831289 is an frugal number, since it uses more digits than its factorization.

19674831289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 277 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The spelling of 19674831289 in words is "nineteen billion, six hundred seventy-four million, eight hundred thirty-one thousand, two hundred eighty-nine".