1313002789 has 4 divisors (see below), whose sum is σ = 1500574624. Its totient is φ = 1125430956.

The previous prime is 1313002783. The next prime is 1313002793. The reversal of 1313002789 is 9872003131.

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: 9872003131 = 467 ⋅21139193.

It is a cyclic number.

It is not a de Polignac number, because 1313002789 - 2⁷ = 1313002661 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 (1313002783) 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, 93785907 + ... + 93785920.

It is an arithmetic number, because the mean of its divisors is an integer number (375143656).

Almost surely, 2^1313002789 is an apocalyptic number.

It is an amenable number.

1313002789 is a deficient number, since it is larger than the sum of its proper divisors (187571835).

1313002789 is an equidigital number, since it uses as much as digits as its factorization.

1313002789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187571834.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1313002789 is about 36235.3803484937. The cubic root of 1313002789 is about 1095.0195749995.

The spelling of 1313002789 in words is "one billion, three hundred thirteen million, two thousand, seven hundred eighty-nine".