1315443144 has 64 divisors (see below), whose sum is σ = 3381258240. Its totient is φ = 426254400.

The previous prime is 1315443091. The next prime is 1315443149. The reversal of 1315443144 is 4413445131.

It is not an unprimeable number, because it can be changed into a prime (1315443149) 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, 166467 + ... + 174189.

It is an arithmetic number, because the mean of its divisors is an integer number (52832160).

Almost surely, 2^1315443144 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 1315443144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690629120).

1315443144 is an abundant number, since it is smaller than the sum of its proper divisors (2065815096).

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

1315443144 is a wasteful number, since it uses less digits than its factorization.

1315443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7930 (or 7926 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 1315443144 is about 36269.0383660775. The cubic root of 1315443144 is about 1095.6975584939.

Adding to 1315443144 its reverse (4413445131), we get a palindrome (5728888275).

The spelling of 1315443144 in words is "one billion, three hundred fifteen million, four hundred forty-three thousand, one hundred forty-four".