19148314444 has 48 divisors (see below), whose sum is σ = 39356900352. Its totient is φ = 7979504832.

The previous prime is 19148314411. The next prime is 19148314447. The reversal of 19148314444 is 44441384191.

It is a self number, because there is not a number n which added to its sum of digits gives 19148314444.

It is not an unprimeable number, because it can be changed into a prime (19148314447) 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, 1908489 + ... + 1918495.

It is an arithmetic number, because the mean of its divisors is an integer number (819935424).

Almost surely, 2^19148314444 is an apocalyptic number.

19148314444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19148314444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19678450176).

19148314444 is an abundant number, since it is smaller than the sum of its proper divisors (20208585908).

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

19148314444 is a wasteful number, since it uses less digits than its factorization.

19148314444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11902 (or 11900 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The spelling of 19148314444 in words is "nineteen billion, one hundred forty-eight million, three hundred fourteen thousand, four hundred forty-four".