1319719648 has 72 divisors (see below), whose sum is σ = 2849968800. Its totient is φ = 601196544.

The previous prime is 1319719637. The next prime is 1319719669. The reversal of 1319719648 is 8469179131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425688 + ... + 428776.

It is an arithmetic number, because the mean of its divisors is an integer number (39582900).

Almost surely, 2^1319719648 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 1319719648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424984400).

1319719648 is an abundant number, since it is smaller than the sum of its proper divisors (1530249152).

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

1319719648 is a wasteful number, since it uses less digits than its factorization.

1319719648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 3183 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The square root of 1319719648 is about 36327.9458268700. The cubic root of 1319719648 is about 1096.8836445592.

The spelling of 1319719648 in words is "one billion, three hundred nineteen million, seven hundred nineteen thousand, six hundred forty-eight".