189218011 has 8 divisors (see below), whose sum is σ = 196059600. Its totient is φ = 182397600.

The previous prime is 189218009. The next prime is 189218021. The reversal of 189218011 is 110812981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189218011 - 2¹ = 189218009 is a prime.

It is a super-2 number, since 2×189218011² = 71606911373592242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189218021) by changing a digit.

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, 14161 + ... + 24061.

It is an arithmetic number, because the mean of its divisors is an integer number (24507450).

Almost surely, 2^189218011 is an apocalyptic number.

189218011 is a deficient number, since it is larger than the sum of its proper divisors (6841589).

189218011 is an equidigital number, since it uses as much as digits as its factorization.

189218011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589.

The product of its (nonzero) digits is 1152, while the sum is 31.

The square root of 189218011 is about 13755.6537830813. The cubic root of 189218011 is about 574.0999261498.

The spelling of 189218011 in words is "one hundred eighty-nine million, two hundred eighteen thousand, eleven".