191322150 has 48 divisors (see below), whose sum is σ = 476261184. Its totient is φ = 50827680.

The previous prime is 191322139. The next prime is 191322161. The reversal of 191322150 is 51223191.

191322150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (191322139) and next prime (191322161).

It is a self number, because there is not a number n which added to its sum of digits gives 191322150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40197 + ... + 44703.

It is an arithmetic number, because the mean of its divisors is an integer number (9922108).

Almost surely, 2^191322150 is an apocalyptic number.

191322150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 191322150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238130592).

191322150 is an abundant number, since it is smaller than the sum of its proper divisors (284939034).

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

191322150 is a wasteful number, since it uses less digits than its factorization.

191322150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805 (or 4800 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 191322150 is about 13831.9250287153. The cubic root of 191322150 is about 576.2201186583.

The spelling of 191322150 in words is "one hundred ninety-one million, three hundred twenty-two thousand, one hundred fifty".