19194445848 has 64 divisors (see below), whose sum is σ = 50617728000. Its totient is φ = 6048680832.

The previous prime is 19194445841. The next prime is 19194445849. The reversal of 19194445848 is 84854449191.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19194445841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174486 + ... + 262362.

It is an arithmetic number, because the mean of its divisors is an integer number (790902000).

Almost surely, 2^19194445848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19194445848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25308864000).

19194445848 is an abundant number, since it is smaller than the sum of its proper divisors (31423282152).

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

19194445848 is a wasteful number, since it uses less digits than its factorization.

19194445848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88384 (or 88380 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 57.

The spelling of 19194445848 in words is "nineteen billion, one hundred ninety-four million, four hundred forty-five thousand, eight hundred forty-eight".