19740873 has 4 divisors (see below), whose sum is σ = 26321168. Its totient is φ = 13160580.

The previous prime is 19740863. The next prime is 19740883. The reversal of 19740873 is 37804791.

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 an interprime number because it is at equal distance from previous prime (19740863) and next prime (19740883).

It is not a de Polignac number, because 19740873 - 2⁵ = 19740841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19740863) 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, 3290143 + ... + 3290148.

It is an arithmetic number, because the mean of its divisors is an integer number (6580292).

Almost surely, 2^19740873 is an apocalyptic number.

It is an amenable number.

19740873 is a deficient number, since it is larger than the sum of its proper divisors (6580295).

19740873 is an equidigital number, since it uses as much as digits as its factorization.

19740873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580294.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 19740873 is about 4443.0702222675. The cubic root of 19740873 is about 270.2643638411.

The spelling of 19740873 in words is "nineteen million, seven hundred forty thousand, eight hundred seventy-three".