191954 has 8 divisors (see below), whose sum is σ = 329088. Its totient is φ = 82260.

The previous prime is 191953. The next prime is 191969. The reversal of 191954 is 459191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 191954.

It is not an unprimeable number, because it can be changed into a prime (191953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6842 + ... + 6869.

It is an arithmetic number, because the mean of its divisors is an integer number (41136).

2¹⁹¹⁹⁵⁴ is an apocalyptic number.

191954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

191954 is a deficient number, since it is larger than the sum of its proper divisors (137134).

191954 is a wasteful number, since it uses less digits than its factorization.

191954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13720.

The product of its digits is 1620, while the sum is 29.

The square root of 191954 is about 438.1255527814. The cubic root of 191954 is about 57.6853752582.

The spelling of 191954 in words is "one hundred ninety-one thousand, nine hundred fifty-four".