1303139573 has 4 divisors (see below), whose sum is σ = 1379794860. Its totient is φ = 1226484288.

The previous prime is 1303139569. The next prime is 1303139597. The reversal of 1303139573 is 3759313031.

It is a happy number.

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 377641489 + 925498084 = 19433^2 + 30422^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303139573 - 2² = 1303139569 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 (1303139473) 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, 38327618 + ... + 38327651.

It is an arithmetic number, because the mean of its divisors is an integer number (344948715).

Almost surely, 2^1303139573 is an apocalyptic number.

It is an amenable number.

1303139573 is a deficient number, since it is larger than the sum of its proper divisors (76655287).

1303139573 is an equidigital number, since it uses as much as digits as its factorization.

1303139573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76655286.

The product of its (nonzero) digits is 25515, while the sum is 35.

The square root of 1303139573 is about 36099.0245436078. The cubic root of 1303139573 is about 1092.2707684253.

The spelling of 1303139573 in words is "one billion, three hundred three million, one hundred thirty-nine thousand, five hundred seventy-three".