19314973 has 4 divisors (see below), whose sum is σ = 19340860. Its totient is φ = 19289088.

The previous prime is 19314959. The next prime is 19314989. The reversal of 19314973 is 37941391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37941391 = 37 ⋅1025443.

It can be written as a sum of positive squares in 2 ways, for example, as 9467929 + 9847044 = 3077^2 + 3138^2 .

It is a cyclic number.

It is not a de Polignac number, because 19314973 - 2⁹ = 19314461 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 (19314923) 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, 11790 + ... + 13327.

It is an arithmetic number, because the mean of its divisors is an integer number (4835215).

Almost surely, 2^19314973 is an apocalyptic number.

It is an amenable number.

19314973 is a deficient number, since it is larger than the sum of its proper divisors (25887).

19314973 is an equidigital number, since it uses as much as digits as its factorization.

19314973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25886.

The product of its digits is 20412, while the sum is 37.

The square root of 19314973 is about 4394.8803169142. The cubic root of 19314973 is about 268.3066077657.

The spelling of 19314973 in words is "nineteen million, three hundred fourteen thousand, nine hundred seventy-three".