19076858161 has 9 divisors (see below), whose sum is σ = 19413968043. Its totient is φ = 18745510680.

The previous prime is 19076858149. The next prime is 19076858167. The reversal of 19076858161 is 16185867091.

The square root of 19076858161 is 138119.

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., 12447641761 + 6629216400 = 111569^2 + 81420^2 .

It is not a de Polignac number, because 19076858161 - 2²⁷ = 18942640433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19076858099 and 19076858108.

It is not an unprimeable number, because it can be changed into a prime (19076858167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8147851 + ... + 8150191.

Almost surely, 2^19076858161 is an apocalyptic number.

19076858161 is the 138119-th square number.

19076858161 is the 69060-th centered octagonal number.

It is an amenable number.

19076858161 is a deficient number, since it is larger than the sum of its proper divisors (337109882).

19076858161 is an frugal number, since it uses more digits than its factorization.

19076858161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 2400 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 19076858161 in words is "nineteen billion, seventy-six million, eight hundred fifty-eight thousand, one hundred sixty-one".