19223373140 has 12 divisors (see below), whose sum is σ = 40369083636. Its totient is φ = 7689349248.

The previous prime is 19223373073. The next prime is 19223373163. The reversal of 19223373140 is 4137332291.

It can be written as a sum of positive squares in 2 ways, for example, as 7067428624 + 12155944516 = 84068^2 + 110254^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19223373140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480584309 + ... + 480584348.

It is an arithmetic number, because the mean of its divisors is an integer number (3364090303).

Almost surely, 2^19223373140 is an apocalyptic number.

19223373140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19223373140 is an abundant number, since it is smaller than the sum of its proper divisors (21145710496).

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

19223373140 is a wasteful number, since it uses less digits than its factorization.

19223373140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961168666 (or 961168664 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 19223373140 in words is "nineteen billion, two hundred twenty-three million, three hundred seventy-three thousand, one hundred forty".