19061895220 has 12 divisors (see below), whose sum is σ = 40029980004. Its totient is φ = 7624758080.

The previous prime is 19061895169. The next prime is 19061895221. The reversal of 19061895220 is 2259816091.

It can be written as a sum of positive squares in 2 ways, for example, as 14811376804 + 4250518416 = 121702^2 + 65196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19061895221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476547361 + ... + 476547400.

It is an arithmetic number, because the mean of its divisors is an integer number (3335831667).

Almost surely, 2^19061895220 is an apocalyptic number.

19061895220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19061895220 is an abundant number, since it is smaller than the sum of its proper divisors (20968084784).

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

19061895220 is a wasteful number, since it uses less digits than its factorization.

19061895220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953094770 (or 953094768 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 19061895220 in words is "nineteen billion, sixty-one million, eight hundred ninety-five thousand, two hundred twenty".