1298513 has 4 divisors (see below), whose sum is σ = 1302768. Its totient is φ = 1294260.

The previous prime is 1298491. The next prime is 1298537. The reversal of 1298513 is 3158921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3158921 = 19 ⋅166259.

It is a cyclic number.

It is not a de Polignac number, because 1298513 - 2¹⁶ = 1232977 is a prime.

It is a super-2 number, since 2×1298513² = 3372272022338, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631 + ... + 2292.

It is an arithmetic number, because the mean of its divisors is an integer number (325692).

2^1298513 is an apocalyptic number.

It is an amenable number.

1298513 is a deficient number, since it is larger than the sum of its proper divisors (4255).

1298513 is an equidigital number, since it uses as much as digits as its factorization.

1298513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254.

The product of its digits is 2160, while the sum is 29.

The square root of 1298513 is about 1139.5231458816. The cubic root of 1298513 is about 109.0976595781.

The spelling of 1298513 in words is "one million, two hundred ninety-eight thousand, five hundred thirteen".