209190082 has 16 divisors (see below), whose sum is σ = 324817920. Its totient is φ = 100962288.

The previous prime is 209190073. The next prime is 209190161. The reversal of 209190082 is 280091902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 20527.

It is an arithmetic number, because the mean of its divisors is an integer number (20301120).

Almost surely, 2^209190082 is an apocalyptic number.

209190082 is a deficient number, since it is larger than the sum of its proper divisors (115627838).

209190082 is a wasteful number, since it uses less digits than its factorization.

209190082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22425.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 209190082 is about 14463.4049241525. The cubic root of 209190082 is about 593.6270696268.

The spelling of 209190082 in words is "two hundred nine million, one hundred ninety thousand, eighty-two".