1300456813 has 4 divisors (see below), whose sum is σ = 1324993788. Its totient is φ = 1275919840.

The previous prime is 1300456811. The next prime is 1300456849. The reversal of 1300456813 is 3186540031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3186540031 = 29761 ⋅107071.

It can be written as a sum of positive squares in 2 ways, for example, as 653415844 + 647040969 = 25562^2 + 25437^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300456813 - 2¹ = 1300456811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300456811) 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, 12268408 + ... + 12268513.

It is an arithmetic number, because the mean of its divisors is an integer number (331248447).

Almost surely, 2^1300456813 is an apocalyptic number.

It is an amenable number.

1300456813 is a deficient number, since it is larger than the sum of its proper divisors (24536975).

1300456813 is an equidigital number, since it uses as much as digits as its factorization.

1300456813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24536974.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1300456813 is about 36061.8470547475. The cubic root of 1300456813 is about 1091.5207046178.

Adding to 1300456813 its reverse (3186540031), we get a palindrome (4486996844).

The spelling of 1300456813 in words is "one billion, three hundred million, four hundred fifty-six thousand, eight hundred thirteen".