19192928291920 has 80 divisors (see below), whose sum is σ = 45471690585360. Its totient is φ = 7531903180800.

The previous prime is 19192928291869. The next prime is 19192928291939. The reversal of 19192928291920 is 2919282929191.

It can be written as a sum of positive squares in 8 ways, for example, as 9752229596736 + 9440698695184 = 3122856^2 + 3072572^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3156921 + ... + 6953560.

It is an arithmetic number, because the mean of its divisors is an integer number (568396132317).

Almost surely, 2^{19192928291920} is an apocalyptic number.

19192928291920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19192928291920 is an abundant number, since it is smaller than the sum of its proper divisors (26278762293440).

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

19192928291920 is a wasteful number, since it uses less digits than its factorization.

19192928291920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110944 (or 10110938 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 64.

The spelling of 19192928291920 in words is "nineteen trillion, one hundred ninety-two billion, nine hundred twenty-eight million, two hundred ninety-one thousand, nine hundred twenty".