19470920250 has 256 divisors, whose sum is σ = 54551937024. Its totient is φ = 4599936000.

The previous prime is 19470920243. The next prime is 19470920297. The reversal of 19470920250 is 5202907491.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19470920199 and 19470920208.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19647255 + ... + 19648245.

It is an arithmetic number, because the mean of its divisors is an integer number (213093504).

Almost surely, 2^19470920250 is an apocalyptic number.

19470920250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19470920250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27275968512).

19470920250 is an abundant number, since it is smaller than the sum of its proper divisors (35081016774).

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

19470920250 is a wasteful number, since it uses less digits than its factorization.

19470920250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 19470920250 in words is "nineteen billion, four hundred seventy million, nine hundred twenty thousand, two hundred fifty".