192681289 has 4 divisors (see below), whose sum is σ = 192849556. Its totient is φ = 192513024.

The previous prime is 192681283. The next prime is 192681301. The reversal of 192681289 is 982186291.

192681289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982186291 = 137 ⋅7169243.

It can be written as a sum of positive squares in 2 ways, for example, as 109725625 + 82955664 = 10475^2 + 9108^2 .

It is a cyclic number.

It is not a de Polignac number, because 192681289 - 2⁵ = 192681257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192681283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82404 + ... + 84709.

It is an arithmetic number, because the mean of its divisors is an integer number (48212389).

Almost surely, 2^192681289 is an apocalyptic number.

It is an amenable number.

192681289 is a deficient number, since it is larger than the sum of its proper divisors (168267).

192681289 is a wasteful number, since it uses less digits than its factorization.

192681289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168266.

The product of its digits is 124416, while the sum is 46.

The square root of 192681289 is about 13880.9685901237. The cubic root of 192681289 is about 577.5813759380.

The spelling of 192681289 in words is "one hundred ninety-two million, six hundred eighty-one thousand, two hundred eighty-nine".