191301085 has 8 divisors (see below), whose sum is σ = 243065016. Its totient is φ = 144038400.

The previous prime is 191301079. The next prime is 191301157. The reversal of 191301085 is 580103191.

It can be written as a sum of positive squares in 4 ways, for example, as 102677689 + 88623396 = 10133^2 + 9414^2 .

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

It is not a de Polignac number, because 191301085 - 2⁵ = 191301053 is a prime.

It is a super-2 number, since 2×191301085² = 73192210244354450, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1125216 + ... + 1125385.

It is an arithmetic number, because the mean of its divisors is an integer number (30383127).

Almost surely, 2^191301085 is an apocalyptic number.

It is an amenable number.

191301085 is a deficient number, since it is larger than the sum of its proper divisors (51763931).

191301085 is a wasteful number, since it uses less digits than its factorization.

191301085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250623.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 191301085 is about 13831.1635446914. The cubic root of 191301085 is about 576.1989701707.

The spelling of 191301085 in words is "one hundred ninety-one million, three hundred one thousand, eighty-five".