1309504093 has 2 divisors, whose sum is σ = 1309504094. Its totient is φ = 1309504092.

The previous prime is 1309504039. The next prime is 1309504129. The reversal of 1309504093 is 3904059031.

Together with previous prime (1309504039) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1269283129 + 40220964 = 35627^2 + 6342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1309504093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1309204093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654752046 + 654752047.

It is an arithmetic number, because the mean of its divisors is an integer number (654752047).

Almost surely, 2^1309504093 is an apocalyptic number.

It is an amenable number.

1309504093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309504093 is an equidigital number, since it uses as much as digits as its factorization.

1309504093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 1309504093 is about 36187.0707988364. The cubic root of 1309504093 is about 1094.0460943205.

The spelling of 1309504093 in words is "one billion, three hundred nine million, five hundred four thousand, ninety-three".