192066891 has 16 divisors (see below), whose sum is σ = 259126560. Its totient is φ = 126533120.

The previous prime is 192066871. The next prime is 192066893. The reversal of 192066891 is 198660291.

It is a cyclic number.

It is not a de Polignac number, because 192066891 - 2⁹ = 192066379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (192066893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155665 + ... + 156893.

It is an arithmetic number, because the mean of its divisors is an integer number (16195410).

Almost surely, 2^192066891 is an apocalyptic number.

192066891 is a deficient number, since it is larger than the sum of its proper divisors (67059669).

192066891 is a wasteful number, since it uses less digits than its factorization.

192066891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 192066891 is about 13858.8199714117. The cubic root of 192066891 is about 576.9668158415.

The spelling of 192066891 in words is "one hundred ninety-two million, sixty-six thousand, eight hundred ninety-one".