192891 has 8 divisors (see below), whose sum is σ = 259920. Its totient is φ = 127232.

The previous prime is 192889. The next prime is 192917. The reversal of 192891 is 198291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 192891 - 2¹ = 192889 is a prime.

192891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (192811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 623.

It is an arithmetic number, because the mean of its divisors is an integer number (32490).

2¹⁹²⁸⁹¹ is an apocalyptic number.

192891 is a deficient number, since it is larger than the sum of its proper divisors (67029).

192891 is a wasteful number, since it uses less digits than its factorization.

192891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685.

The product of its digits is 1296, while the sum is 30.

The square root of 192891 is about 439.1935791880. The cubic root of 192891 is about 57.7790843174.

The spelling of 192891 in words is "one hundred ninety-two thousand, eight hundred ninety-one".