2019423000 has 512 divisors, whose sum is σ = 7785123840. Its totient is φ = 425779200.

The previous prime is 2019422981. The next prime is 2019423001. The reversal of 2019423000 is 3249102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019423001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17870944 + ... + 17871056.

It is an arithmetic number, because the mean of its divisors is an integer number (15205320).

Almost surely, 2^2019423000 is an apocalyptic number.

2019423000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2019423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3892561920).

2019423000 is an abundant number, since it is smaller than the sum of its proper divisors (5765700840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2019423000 is a wasteful number, since it uses less digits than its factorization.

2019423000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2019423000 is about 44937.9906092829. The cubic root of 2019423000 is about 1263.9864920711.

The spelling of 2019423000 in words is "two billion, nineteen million, four hundred twenty-three thousand".