19379243 has 4 divisors (see below), whose sum is σ = 20869968. Its totient is φ = 17888520.

The previous prime is 19379203. The next prime is 19379249. The reversal of 19379243 is 34297391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34297391 = 311 ⋅110281.

It is not a de Polignac number, because 19379243 - 2⁸ = 19378987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19379197 and 19379206.

It is not an unprimeable number, because it can be changed into a prime (19379249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745343 + ... + 745368.

It is an arithmetic number, because the mean of its divisors is an integer number (5217492).

Almost surely, 2^19379243 is an apocalyptic number.

19379243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

19379243 is a deficient number, since it is larger than the sum of its proper divisors (1490725).

19379243 is a wasteful number, since it uses less digits than its factorization.

19379243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490724.

The product of its digits is 40824, while the sum is 38.

The square root of 19379243 is about 4402.1861614430. The cubic root of 19379243 is about 268.6038723902.

The spelling of 19379243 in words is "nineteen million, three hundred seventy-nine thousand, two hundred forty-three".