190545866 has 16 divisors (see below), whose sum is σ = 327627456. Its totient is φ = 81418176.

The previous prime is 190545853. The next prime is 190545899. The reversal of 190545866 is 668545091.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15476 + ... + 24911.

It is an arithmetic number, because the mean of its divisors is an integer number (20476716).

Almost surely, 2^190545866 is an apocalyptic number.

190545866 is a deficient number, since it is larger than the sum of its proper divisors (137081590).

190545866 is a wasteful number, since it uses less digits than its factorization.

190545866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40733.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 190545866 is about 13803.8351917139. The cubic root of 190545866 is about 575.4397301721.

The spelling of 190545866 in words is "one hundred ninety million, five hundred forty-five thousand, eight hundred sixty-six".