19243 has 4 divisors (see below), whose sum is σ = 22000. Its totient is φ = 16488.

The previous prime is 19237. The next prime is 19249. The reversal of 19243 is 34291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34291 = 53 ⋅647.

It is an interprime number because it is at equal distance from previous prime (19237) and next prime (19249).

It is a cyclic number.

It is not a de Polignac number, because 19243 - 2⁵ = 19211 is a prime.

It is a d-powerful number, because it can be written as 1 + 9² + 2¹¹ + 4⁷ + 3⁶ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19243.

It is not an unprimeable number, because it can be changed into a prime (19249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368 + ... + 1381.

It is an arithmetic number, because the mean of its divisors is an integer number (5500).

2¹⁹²⁴³ is an apocalyptic number.

19243 is a deficient number, since it is larger than the sum of its proper divisors (2757).

19243 is an equidigital number, since it uses as much as digits as its factorization.

19243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756.

The product of its digits is 216, while the sum is 19.

The square root of 19243 is about 138.7191407124. The cubic root of 19243 is about 26.7972931104.

It can be divided in two parts, 192 and 43, that multiplied together give a triangular number (8256 = T₁₂₈).

The spelling of 19243 in words is "nineteen thousand, two hundred forty-three".