191464 has 32 divisors (see below), whose sum is σ = 443520. Its totient is φ = 75456.

The previous prime is 191461. The next prime is 191467. The reversal of 191464 is 464191.

191464 is digitally balanced in base 3, 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 (191461) and next prime (191467).

It is not an unprimeable number, because it can be changed into a prime (191461) 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 7 ways as a sum of consecutive naturals, for example, 597 + ... + 859.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2¹⁹¹⁴⁶⁴ is an apocalyptic number.

191464 is a gapful number since it is divisible by the number (14) 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 191464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221760).

191464 is an abundant number, since it is smaller than the sum of its proper divisors (252056).

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

191464 is a wasteful number, since it uses less digits than its factorization.

191464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 285 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 191464 is about 437.5659950225. The cubic root of 191464 is about 57.6362490450.

The spelling of 191464 in words is "one hundred ninety-one thousand, four hundred sixty-four".