19475390220 has 288 divisors, whose sum is σ = 66374380800. Its totient is φ = 4206289920.

The previous prime is 19475390177. The next prime is 19475390227. The reversal of 19475390220 is 2209357491.

It is not an unprimeable number, because it can be changed into a prime (19475390227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7214431 + ... + 7217129.

It is an arithmetic number, because the mean of its divisors is an integer number (230466600).

Almost surely, 2^19475390220 is an apocalyptic number.

19475390220 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 19475390220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33187190400).

19475390220 is an abundant number, since it is smaller than the sum of its proper divisors (46898990580).

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

19475390220 is a wasteful number, since it uses less digits than its factorization.

19475390220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 19475390220 in words is "nineteen billion, four hundred seventy-five million, three hundred ninety thousand, two hundred twenty".