191380 has 24 divisors (see below), whose sum is σ = 459648. Its totient is φ = 65568.

The previous prime is 191353. The next prime is 191413. The reversal of 191380 is 83191.

191380 = T₂₁ + T₂₂ + ... + T₁₀₄.

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, 544 + ... + 823.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2¹⁹¹³⁸⁰ is an apocalyptic number.

191380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191380 is an abundant number, since it is smaller than the sum of its proper divisors (268268).

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

191380 is a wasteful number, since it uses less digits than its factorization.

191380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 191380 is about 437.4699989714. The cubic root of 191380 is about 57.6278189953.

The spelling of 191380 in words is "one hundred ninety-one thousand, three hundred eighty".