19129423 has 8 divisors (see below), whose sum is σ = 19608768. Its totient is φ = 18653184.

The previous prime is 19129381. The next prime is 19129427. The reversal of 19129423 is 32492191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19129423 - 2⁹ = 19128911 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 (19129427) 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 7 ways as a sum of consecutive naturals, for example, 16015 + ... + 17167.

It is an arithmetic number, because the mean of its divisors is an integer number (2451096).

Almost surely, 2^19129423 is an apocalyptic number.

19129423 is a deficient number, since it is larger than the sum of its proper divisors (479345).

19129423 is a wasteful number, since it uses less digits than its factorization.

19129423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553.

The product of its digits is 3888, while the sum is 31.

The square root of 19129423 is about 4373.7195840611. The cubic root of 19129423 is about 267.4446760133. Note that the first 3 decimals are identical.

The spelling of 19129423 in words is "nineteen million, one hundred twenty-nine thousand, four hundred twenty-three".