1315646673 has 12 divisors (see below), whose sum is σ = 1928165904. Its totient is φ = 797361400.

The previous prime is 1315646671. The next prime is 1315646681. The reversal of 1315646673 is 3766465131.

1315646673 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1315646673 - 2¹ = 1315646671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315646671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1811823 + ... + 1812548.

It is an arithmetic number, because the mean of its divisors is an integer number (160680492).

Almost surely, 2^1315646673 is an apocalyptic number.

It is an amenable number.

1315646673 is a deficient number, since it is larger than the sum of its proper divisors (612519231).

1315646673 is a wasteful number, since it uses less digits than its factorization.

1315646673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624396 (or 3624385 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 1315646673 is about 36271.8440804986. The cubic root of 1315646673 is about 1095.7540653649.

The spelling of 1315646673 in words is "one billion, three hundred fifteen million, six hundred forty-six thousand, six hundred seventy-three".