19794893 has 4 divisors (see below), whose sum is σ = 19980000. Its totient is φ = 19609788.

The previous prime is 19794823. The next prime is 19794937. The reversal of 19794893 is 39849791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39849791 = 67 ⋅594773.

It is a cyclic number.

It is not a de Polignac number, because 19794893 - 2¹⁴ = 19778509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19794823) 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, 92393 + ... + 92606.

It is an arithmetic number, because the mean of its divisors is an integer number (4995000).

Almost surely, 2^19794893 is an apocalyptic number.

It is an amenable number.

19794893 is a deficient number, since it is larger than the sum of its proper divisors (185107).

19794893 is a wasteful number, since it uses less digits than its factorization.

19794893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185106.

The product of its digits is 489888, while the sum is 50.

The square root of 19794893 is about 4449.1451987994. The cubic root of 19794893 is about 270.5106613583.

The spelling of 19794893 in words is "nineteen million, seven hundred ninety-four thousand, eight hundred ninety-three".