19289093 has 4 divisors (see below), whose sum is σ = 19418700. Its totient is φ = 19159488.

The previous prime is 19289077. The next prime is 19289107. The reversal of 19289093 is 39098291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11710084 + 7579009 = 3422^2 + 2753^2 .

It is a cyclic number.

It is not a de Polignac number, because 19289093 - 2⁴ = 19289077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19289093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19289293) 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, 64580 + ... + 64877.

It is an arithmetic number, because the mean of its divisors is an integer number (4854675).

Almost surely, 2^19289093 is an apocalyptic number.

It is an amenable number.

19289093 is a deficient number, since it is larger than the sum of its proper divisors (129607).

19289093 is a wasteful number, since it uses less digits than its factorization.

19289093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129606.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 19289093 is about 4391.9349949652. The cubic root of 19289093 is about 268.1867201423.

The spelling of 19289093 in words is "nineteen million, two hundred eighty-nine thousand, ninety-three".