191160920 has 64 divisors (see below), whose sum is σ = 458045280. Its totient is φ = 71550976.

The previous prime is 191160913. The next prime is 191160923. The reversal of 191160920 is 29061191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191160923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133247 + ... + 134673.

Almost surely, 2^191160920 is an apocalyptic number.

191160920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191160920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229022640).

191160920 is an abundant number, since it is smaller than the sum of its proper divisors (266884360).

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

191160920 is a wasteful number, since it uses less digits than its factorization.

191160920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 191160920 is about 13826.0956166229. The cubic root of 191160920 is about 576.0582101022.

The spelling of 191160920 in words is "one hundred ninety-one million, one hundred sixty thousand, nine hundred twenty".