215114189 has 8 divisors (see below), whose sum is σ = 221759640. Its totient is φ = 208512576.

The previous prime is 215114173. The next prime is 215114201. The reversal of 215114189 is 981411512.

215114189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 97022500 + 118091689 = 9850^2 + 10867^2 .

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 215114189 - 2⁴ = 215114173 is a prime.

It is a super-2 number, since 2×215114189² = 92548228618255442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215114129) 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, 854 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (27719955).

Almost surely, 2^215114189 is an apocalyptic number.

It is an amenable number.

215114189 is a deficient number, since it is larger than the sum of its proper divisors (6645451).

215114189 is a wasteful number, since it uses less digits than its factorization.

215114189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21919.

The product of its digits is 2880, while the sum is 32.

The square root of 215114189 is about 14666.7715943216. The cubic root of 215114189 is about 599.1786808674.

The spelling of 215114189 in words is "two hundred fifteen million, one hundred fourteen thousand, one hundred eighty-nine".