1313061869 has 12 divisors (see below), whose sum is σ = 1536278364. Its totient is φ = 1118968704.

The previous prime is 1313061857. The next prime is 1313061901. The reversal of 1313061869 is 9681603131.

It can be written as a sum of positive squares in 2 ways, for example, as 724417225 + 588644644 = 26915^2 + 24262^2 .

It is not a de Polignac number, because 1313061869 - 2⁴ = 1313061853 is a prime.

It is a super-2 number, since 2×1313061869² = 3448262943643546322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313061569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68972 + ... + 85925.

It is an arithmetic number, because the mean of its divisors is an integer number (128023197).

Almost surely, 2^1313061869 is an apocalyptic number.

It is an amenable number.

1313061869 is a deficient number, since it is larger than the sum of its proper divisors (223216495).

1313061869 is a wasteful number, since it uses less digits than its factorization.

1313061869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155084 (or 155077 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1313061869 is about 36236.1955646561. The cubic root of 1313061869 is about 1095.0359986219.

The spelling of 1313061869 in words is "one billion, three hundred thirteen million, sixty-one thousand, eight hundred sixty-nine".