190666867 has 2 divisors, whose sum is σ = 190666868. Its totient is φ = 190666866.

The previous prime is 190666841. The next prime is 190666897. The reversal of 190666867 is 768666091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190666867 - 2¹¹ = 190664819 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190666867.

It is not a weakly prime, because it can be changed into another prime (190666837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95333433 + 95333434.

It is an arithmetic number, because the mean of its divisors is an integer number (95333434).

Almost surely, 2^190666867 is an apocalyptic number.

190666867 is a deficient number, since it is larger than the sum of its proper divisors (1).

190666867 is an equidigital number, since it uses as much as digits as its factorization.

190666867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 190666867 is about 13808.2173722751. The cubic root of 190666867 is about 575.5615102118.

The spelling of 190666867 in words is "one hundred ninety million, six hundred sixty-six thousand, eight hundred sixty-seven".