19165332220 has 24 divisors (see below), whose sum is σ = 40252389408. Its totient is φ = 7665144000.

The previous prime is 19165332217. The next prime is 19165332229. The reversal of 19165332220 is 2223356191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19165332229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108570 + ... + 223870.

It is an arithmetic number, because the mean of its divisors is an integer number (1677182892).

Almost surely, 2^19165332220 is an apocalyptic number.

19165332220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19165332220 is an abundant number, since it is smaller than the sum of its proper divisors (21087057188).

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

19165332220 is a wasteful number, since it uses less digits than its factorization.

19165332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123621 (or 123619 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 19165332220 in words is "nineteen billion, one hundred sixty-five million, three hundred thirty-two thousand, two hundred twenty".