19696493 has 4 divisors (see below), whose sum is σ = 19799808. Its totient is φ = 19593180.

The previous prime is 19696471. The next prime is 19696499. The reversal of 19696493 is 39469691.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19696493 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 (19696499) 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, 51371 + ... + 51752.

It is an arithmetic number, because the mean of its divisors is an integer number (4949952).

Almost surely, 2^19696493 is an apocalyptic number.

It is an amenable number.

19696493 is a deficient number, since it is larger than the sum of its proper divisors (103315).

19696493 is a wasteful number, since it uses less digits than its factorization.

19696493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103314.

The product of its digits is 314928, while the sum is 47.

The square root of 19696493 is about 4438.0731179195. The cubic root of 19696493 is about 270.0616822952.

The spelling of 19696493 in words is "nineteen million, six hundred ninety-six thousand, four hundred ninety-three".