1299736013 has 4 divisors (see below), whose sum is σ = 1324259388. Its totient is φ = 1275212640.

The previous prime is 1299736001. The next prime is 1299736033. The reversal of 1299736013 is 3106379921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1146025609 + 153710404 = 33853^2 + 12398^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299736013 - 2¹⁸ = 1299473869 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 (1299736033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12261608 + ... + 12261713.

It is an arithmetic number, because the mean of its divisors is an integer number (331064847).

Almost surely, 2^1299736013 is an apocalyptic number.

It is an amenable number.

1299736013 is a deficient number, since it is larger than the sum of its proper divisors (24523375).

1299736013 is an equidigital number, since it uses as much as digits as its factorization.

1299736013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24523374.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 1299736013 is about 36051.8517277546. The cubic root of 1299736013 is about 1091.3190027951.

The spelling of 1299736013 in words is "one billion, two hundred ninety-nine million, seven hundred thirty-six thousand, thirteen".