1315685448 has 192 divisors, whose sum is σ = 4546713600. Its totient is φ = 333728640.

The previous prime is 1315685389. The next prime is 1315685453. The reversal of 1315685448 is 8445865131.

1315685448 is a `hidden beast` number, since 1 + 31 + 568 + 54 + 4 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235633 + ... + 241151.

It is an arithmetic number, because the mean of its divisors is an integer number (23680800).

Almost surely, 2^1315685448 is an apocalyptic number.

1315685448 is a gapful number since it is divisible by the number (18) 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 1315685448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2273356800).

1315685448 is an abundant number, since it is smaller than the sum of its proper divisors (3231028152).

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

1315685448 is a wasteful number, since it uses less digits than its factorization.

1315685448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5585 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 1315685448 is about 36272.3785820561. The cubic root of 1315685448 is about 1095.7648300196.

The spelling of 1315685448 in words is "one billion, three hundred fifteen million, six hundred eighty-five thousand, four hundred forty-eight".