19800093 has 4 divisors (see below), whose sum is σ = 26400128. Its totient is φ = 13200060.

The previous prime is 19800083. The next prime is 19800101. The reversal of 19800093 is 39000891.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39000891 = 3 ⋅13000297.

It is not a de Polignac number, because 19800093 - 2¹⁷ = 19669021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19800093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19800083) 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, 3300013 + ... + 3300018.

It is an arithmetic number, because the mean of its divisors is an integer number (6600032).

Almost surely, 2^19800093 is an apocalyptic number.

It is an amenable number.

19800093 is a deficient number, since it is larger than the sum of its proper divisors (6600035).

19800093 is an equidigital number, since it uses as much as digits as its factorization.

19800093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600034.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 19800093 is about 4449.7295423430. The cubic root of 19800093 is about 270.5343464621.

The spelling of 19800093 in words is "nineteen million, eight hundred thousand, ninety-three".