189937211 has 8 divisors (see below), whose sum is σ = 197925120. Its totient is φ = 182045248.

The previous prime is 189937201. The next prime is 189937249. The reversal of 189937211 is 112739981.

It is a happy number.

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 189937211 - 2⁶ = 189937147 is a prime.

It is a super-2 number, since 2×189937211² = 72152288244917042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189937201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19931 + ... + 27876.

It is an arithmetic number, because the mean of its divisors is an integer number (24740640).

Almost surely, 2^189937211 is an apocalyptic number.

189937211 is a deficient number, since it is larger than the sum of its proper divisors (7987909).

189937211 is a wasteful number, since it uses less digits than its factorization.

189937211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47973.

The product of its digits is 27216, while the sum is 41.

The square root of 189937211 is about 13781.7709674773. The cubic root of 189937211 is about 574.8263732859.

The spelling of 189937211 in words is "one hundred eighty-nine million, nine hundred thirty-seven thousand, two hundred eleven".