1315837 has 2 divisors, whose sum is σ = 1315838. Its totient is φ = 1315836.

The previous prime is 1315823. The next prime is 1315849. The reversal of 1315837 is 7385131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1267876 + 47961 = 1126^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315837 - 2¹⁵ = 1283069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657918 + 657919.

It is an arithmetic number, because the mean of its divisors is an integer number (657919).

2^1315837 is an apocalyptic number.

It is an amenable number.

1315837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315837 is an equidigital number, since it uses as much as digits as its factorization.

1315837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 28.

The square root of 1315837 is about 1147.0993854065. The cubic root of 1315837 is about 109.5806901620.

The spelling of 1315837 in words is "one million, three hundred fifteen thousand, eight hundred thirty-seven".