19794993 has 8 divisors (see below), whose sum is σ = 26586528. Its totient is φ = 13100064.

The previous prime is 19794991. The next prime is 19795051. The reversal of 19794993 is 39949791.

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

It is not a de Polignac number, because 19794993 - 2¹ = 19794991 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19794991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23671 + ... + 24492.

It is an arithmetic number, because the mean of its divisors is an integer number (3323316).

Almost surely, 2^19794993 is an apocalyptic number.

It is an amenable number.

19794993 is a deficient number, since it is larger than the sum of its proper divisors (6791535).

19794993 is a wasteful number, since it uses less digits than its factorization.

19794993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48303.

The product of its digits is 551124, while the sum is 51.

The square root of 19794993 is about 4449.1564368990. The cubic root of 19794993 is about 270.5111168802.

The spelling of 19794993 in words is "nineteen million, seven hundred ninety-four thousand, nine hundred ninety-three".