19895223380 has 48 divisors (see below), whose sum is σ = 45167566080. Its totient is φ = 7335474048.

The previous prime is 19895223377. The next prime is 19895223407. The reversal of 19895223380 is 8332259891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693452 + ... + 721571.

It is an arithmetic number, because the mean of its divisors is an integer number (940990960).

Almost surely, 2^19895223380 is an apocalyptic number.

19895223380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19895223380 is an abundant number, since it is smaller than the sum of its proper divisors (25272342700).

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

19895223380 is a wasteful number, since it uses less digits than its factorization.

19895223380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415088 (or 1415086 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 19895223380 in words is "nineteen billion, eight hundred ninety-five million, two hundred twenty-three thousand, three hundred eighty".