19873793 has 4 divisors (see below), whose sum is σ = 20125440. Its totient is φ = 19622148.

The previous prime is 19873757. The next prime is 19873801. The reversal of 19873793 is 39737891.

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 not a de Polignac number, because 19873793 - 2¹² = 19869697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19873703) 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, 125705 + ... + 125862.

It is an arithmetic number, because the mean of its divisors is an integer number (5031360).

It is a Proth number, since it is equal to 1213 ⋅ 2¹⁴ + 1 and 1213 < 2¹⁴.

Almost surely, 2^19873793 is an apocalyptic number.

It is an amenable number.

19873793 is a deficient number, since it is larger than the sum of its proper divisors (251647).

19873793 is an equidigital number, since it uses as much as digits as its factorization.

19873793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251646.

The product of its digits is 285768, while the sum is 47.

The square root of 19873793 is about 4458.0032525784. The cubic root of 19873793 is about 270.8695922632.

The spelling of 19873793 in words is "nineteen million, eight hundred seventy-three thousand, seven hundred ninety-three".