1369513 has 4 divisors (see below), whose sum is σ = 1373188. Its totient is φ = 1365840.

The previous prime is 1369499. The next prime is 1369517. The reversal of 1369513 is 3159631.

1369513 = 827² + 828².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3159631 = 137 ⋅23063.

It can be written as a sum of positive squares in 2 ways, for example, as 683929 + 685584 = 827^2 + 828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1369517) 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 3 ways as a sum of consecutive naturals, for example, 1206 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (343297).

2^1369513 is an apocalyptic number.

1369513 is the 828-th centered square number.

It is an amenable number.

1369513 is a deficient number, since it is larger than the sum of its proper divisors (3675).

1369513 is an equidigital number, since it uses as much as digits as its factorization.

1369513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674.

The product of its digits is 2430, while the sum is 28.

The square root of 1369513 is about 1170.2619364911. The cubic root of 1369513 is about 111.0508924434.

The spelling of 1369513 in words is "one million, three hundred sixty-nine thousand, five hundred thirteen".