19138848 has 48 divisors (see below), whose sum is σ = 50946336. Its totient is φ = 6289920.

The previous prime is 19138843. The next prime is 19138849. The reversal of 19138848 is 84883191.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (19138843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5643 + ... + 8373.

It is an arithmetic number, because the mean of its divisors is an integer number (1061382).

Almost surely, 2^19138848 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 19138848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25473168).

19138848 is an abundant number, since it is smaller than the sum of its proper divisors (31807488).

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

19138848 is a wasteful number, since it uses less digits than its factorization.

19138848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817 (or 2809 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 19138848 is about 4374.7969095719. The cubic root of 19138848 is about 267.4885918214.

The spelling of 19138848 in words is "nineteen million, one hundred thirty-eight thousand, eight hundred forty-eight".