1919850000 has 120 divisors (see below), whose sum is σ = 6199603200. Its totient is φ = 511920000.

The previous prime is 1919849993. The next prime is 1919850013. The reversal of 1919850000 is 589191.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143601 + ... + 156399.

It is an arithmetic number, because the mean of its divisors is an integer number (51663360).

Almost surely, 2^1919850000 is an apocalyptic number.

1919850000 is a gapful number since it is divisible by the number (10) 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 1919850000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3099801600).

1919850000 is an abundant number, since it is smaller than the sum of its proper divisors (4279753200).

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

1919850000 is an equidigital number, since it uses as much as digits as its factorization.

1919850000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12835 (or 12809 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1919850000 is about 43816.0929339894. The cubic root of 1919850000 is about 1242.8606345333.

The spelling of 1919850000 in words is "one billion, nine hundred nineteen million, eight hundred fifty thousand".