191130620 has 24 divisors (see below), whose sum is σ = 401766288. Its totient is φ = 76377600.

The previous prime is 191130613. The next prime is 191130631. The reversal of 191130620 is 26031191.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19340 + ... + 27500.

It is an arithmetic number, because the mean of its divisors is an integer number (16740262).

Almost surely, 2^191130620 is an apocalyptic number.

191130620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191130620 is an abundant number, since it is smaller than the sum of its proper divisors (210635668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191130620 is a wasteful number, since it uses less digits than its factorization.

191130620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9341 (or 9339 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 191130620 is about 13824.9998191682. Note that the first 3 decimals coincide. The cubic root of 191130620 is about 576.0277724199.

The spelling of 191130620 in words is "one hundred ninety-one million, one hundred thirty thousand, six hundred twenty".