19146857048 has 48 divisors (see below), whose sum is σ = 39844044240. Its totient is φ = 8618575680.

The previous prime is 19146857027. The next prime is 19146857057. The reversal of 19146857048 is 84075864191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3686 + ... + 195722.

It is an arithmetic number, because the mean of its divisors is an integer number (830084255).

Almost surely, 2^19146857048 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 19146857048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19922022120).

19146857048 is an abundant number, since it is smaller than the sum of its proper divisors (20697187192).

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

19146857048 is a wasteful number, since it uses less digits than its factorization.

19146857048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192168 (or 192153 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 19146857048 in words is "nineteen billion, one hundred forty-six million, eight hundred fifty-seven thousand, forty-eight".