1315001856 has 320 divisors, whose sum is σ = 4344721920. Its totient is φ = 345047040.

The previous prime is 1315001851. The next prime is 1315001881. The reversal of 1315001856 is 6581005131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315001851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8375730 + ... + 8375886.

It is an arithmetic number, because the mean of its divisors is an integer number (13577256).

Almost surely, 2^1315001856 is an apocalyptic number.

1315001856 is a gapful number since it is divisible by the number (16) 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 1315001856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2172360960).

1315001856 is an abundant number, since it is smaller than the sum of its proper divisors (3029720064).

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

1315001856 is a wasteful number, since it uses less digits than its factorization.

1315001856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1315001856 is about 36262.9543198014. The cubic root of 1315001856 is about 1095.5750212677.

Adding to 1315001856 its reverse (6581005131), we get a palindrome (7896006987).

The spelling of 1315001856 in words is "one billion, three hundred fifteen million, one thousand, eight hundred fifty-six".