191242885 has 8 divisors (see below), whose sum is σ = 241570080. Its totient is φ = 144941904.

The previous prime is 191242879. The next prime is 191242939. The reversal of 191242885 is 588242191.

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 191242885 - 2⁷ = 191242757 is a prime.

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, 1006447 + ... + 1006636.

It is an arithmetic number, because the mean of its divisors is an integer number (30196260).

Almost surely, 2^191242885 is an apocalyptic number.

It is an amenable number.

191242885 is a deficient number, since it is larger than the sum of its proper divisors (50327195).

191242885 is a wasteful number, since it uses less digits than its factorization.

191242885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013107.

The product of its digits is 46080, while the sum is 40.

The square root of 191242885 is about 13829.0594401789. The cubic root of 191242885 is about 576.1405314337.

The spelling of 191242885 in words is "one hundred ninety-one million, two hundred forty-two thousand, eight hundred eighty-five".