19000093 has 18 divisors (see below), whose sum is σ = 23136414. Its totient is φ = 15556464.

The previous prime is 19000087. The next prime is 19000099. The reversal of 19000093 is 39000091.

It is an interprime number because it is at equal distance from previous prime (19000087) and next prime (19000099).

It can be written as a sum of positive squares in only one way, i.e., 18896409 + 103684 = 4347^2 + 322^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19000093 is a prime.

It is a super-2 number, since 2×19000093² = 722007068017298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000099) 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 17 ways as a sum of consecutive naturals, for example, 25555 + ... + 26287.

Almost surely, 2^19000093 is an apocalyptic number.

It is an amenable number.

19000093 is a deficient number, since it is larger than the sum of its proper divisors (4136321).

19000093 is an equidigital number, since it uses as much as digits as its factorization.

19000093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 19000093 is about 4358.9096113592. The cubic root of 19000093 is about 266.8406002423.

The spelling of 19000093 in words is "nineteen million, ninety-three", and thus it is an aban number and an uban number.