2019899000 has 128 divisors (see below), whose sum is σ = 5457179520. Its totient is φ = 685440000.

The previous prime is 2019898999. The next prime is 2019899009. The reversal of 2019899000 is 9989102.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019899009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705572 + ... + 708428.

It is an arithmetic number, because the mean of its divisors is an integer number (42634215).

Almost surely, 2^2019899000 is an apocalyptic number.

2019899000 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 2019899000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2728589760).

2019899000 is an abundant number, since it is smaller than the sum of its proper divisors (3437280520).

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

2019899000 is a wasteful number, since it uses less digits than its factorization.

2019899000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 2019899000 is about 44943.2864841903. The cubic root of 2019899000 is about 1264.0857960644.

The spelling of 2019899000 in words is "two billion, nineteen million, eight hundred ninety-nine thousand".