19030250205 has 24 divisors (see below), whose sum is σ = 32989510008. Its totient is φ = 10148315136.

The previous prime is 19030250179. The next prime is 19030250243. The reversal of 19030250205 is 50205203091.

It can be written as a sum of positive squares in 4 ways, for example, as 1687730724 + 17342519481 = 41082^2 + 131691^2 .

It is not a de Polignac number, because 19030250205 - 2⁷ = 19030250077 is a prime.

It is a Curzon number.

It is a congruent number.

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, 505309 + ... + 541661.

It is an arithmetic number, because the mean of its divisors is an integer number (1374562917).

Almost surely, 2^19030250205 is an apocalyptic number.

19030250205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19030250205 is a deficient number, since it is larger than the sum of its proper divisors (13959259803).

19030250205 is a wasteful number, since it uses less digits than its factorization.

19030250205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47997 (or 47994 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 19030250205 its reverse (50205203091), we get a palindrome (69235453296).

The spelling of 19030250205 in words is "nineteen billion, thirty million, two hundred fifty thousand, two hundred five".