19320893 has 4 divisors (see below), whose sum is σ = 19365948. Its totient is φ = 19275840.

The previous prime is 19320887. The next prime is 19320937. The reversal of 19320893 is 39802391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39802391 = 43 ⋅925637.

It can be written as a sum of positive squares in 2 ways, for example, as 12020089 + 7300804 = 3467^2 + 2702^2 .

It is a cyclic number.

It is not a de Polignac number, because 19320893 - 2⁴ = 19320877 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 (19320193) 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, 21878 + ... + 22743.

It is an arithmetic number, because the mean of its divisors is an integer number (4841487).

Almost surely, 2^19320893 is an apocalyptic number.

It is an amenable number.

19320893 is a deficient number, since it is larger than the sum of its proper divisors (45055).

19320893 is an equidigital number, since it uses as much as digits as its factorization.

19320893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45054.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 19320893 is about 4395.5537762607. The cubic root of 19320893 is about 268.3340167757.

The spelling of 19320893 in words is "nineteen million, three hundred twenty thousand, eight hundred ninety-three".