216069194 has 16 divisors (see below), whose sum is σ = 364974336. Its totient is φ = 95044800.

The previous prime is 216069193. The next prime is 216069223. The reversal of 216069194 is 491960612.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216069193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157727 + ... + 159090.

It is an arithmetic number, because the mean of its divisors is an integer number (22810896).

Almost surely, 2^216069194 is an apocalyptic number.

216069194 is a deficient number, since it is larger than the sum of its proper divisors (148905142).

216069194 is a wasteful number, since it uses less digits than its factorization.

216069194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316861.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 216069194 is about 14699.2922958896. The cubic root of 216069194 is about 600.0640616784.

The spelling of 216069194 in words is "two hundred sixteen million, sixty-nine thousand, one hundred ninety-four".