19123113 has 16 divisors (see below), whose sum is σ = 27120960. Its totient is φ = 11943936.

The previous prime is 19123099. The next prime is 19123121. The reversal of 19123113 is 31132191.

It is not a de Polignac number, because 19123113 - 2⁵ = 19123081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19123113.

It is not an unprimeable number, because it can be changed into a prime (19123123) 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 15 ways as a sum of consecutive naturals, for example, 12378 + ... + 13836.

It is an arithmetic number, because the mean of its divisors is an integer number (1695060).

Almost surely, 2^19123113 is an apocalyptic number.

It is an amenable number.

19123113 is a deficient number, since it is larger than the sum of its proper divisors (7997847).

19123113 is a wasteful number, since it uses less digits than its factorization.

19123113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its digits is 162, while the sum is 21.

The square root of 19123113 is about 4372.9981705919. The cubic root of 19123113 is about 267.4152664924.

The spelling of 19123113 in words is "nineteen million, one hundred twenty-three thousand, one hundred thirteen".