19030145900 has 72 divisors (see below), whose sum is σ = 42587899200. Its totient is φ = 7376320000.

The previous prime is 19030145861. The next prime is 19030145909. The reversal of 19030145900 is 954103091.

It is not an unprimeable number, because it can be changed into a prime (19030145909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 595325 + ... + 626475.

It is an arithmetic number, because the mean of its divisors is an integer number (591498600).

Almost surely, 2^19030145900 is an apocalyptic number.

19030145900 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 19030145900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21293949600).

19030145900 is an abundant number, since it is smaller than the sum of its proper divisors (23557753300).

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

19030145900 is a wasteful number, since it uses less digits than its factorization.

19030145900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31355 (or 31348 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

Adding to 19030145900 its reverse (954103091), we get a palindrome (19984248991).

The spelling of 19030145900 in words is "nineteen billion, thirty million, one hundred forty-five thousand, nine hundred".