191233085 has 16 divisors (see below), whose sum is σ = 244258416. Its totient is φ = 143228928.

The previous prime is 191233069. The next prime is 191233093. The reversal of 191233085 is 580332191.

It can be written as a sum of positive squares in 8 ways, for example, as 737881 + 190495204 = 859^2 + 13802^2 .

It is a cyclic number.

It is not a de Polignac number, because 191233085 - 2⁴ = 191233069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10577 + ... + 22233.

It is an arithmetic number, because the mean of its divisors is an integer number (15266151).

Almost surely, 2^191233085 is an apocalyptic number.

It is an amenable number.

191233085 is a deficient number, since it is larger than the sum of its proper divisors (53025331).

191233085 is a wasteful number, since it uses less digits than its factorization.

191233085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11872.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 191233085 is about 13828.7051093007. The cubic root of 191233085 is about 576.1306900677.

The spelling of 191233085 in words is "one hundred ninety-one million, two hundred thirty-three thousand, eighty-five".