19819034250 has 32 divisors (see below), whose sum is σ = 49468311360. Its totient is φ = 5285075600.

The previous prime is 19819034237. The next prime is 19819034309. The reversal of 19819034250 is 5243091891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13211940 + ... + 13213439.

It is an arithmetic number, because the mean of its divisors is an integer number (1545884730).

Almost surely, 2^19819034250 is an apocalyptic number.

19819034250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19819034250 is an abundant number, since it is smaller than the sum of its proper divisors (29649277110).

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

19819034250 is a wasteful number, since it uses less digits than its factorization.

19819034250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26425399 (or 26425389 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 19819034250 in words is "nineteen billion, eight hundred nineteen million, thirty-four thousand, two hundred fifty".