1113695309 has 2 divisors, whose sum is σ = 1113695310. Its totient is φ = 1113695308.

The previous prime is 1113695293. The next prime is 1113695339. The reversal of 1113695309 is 9035963111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613949284 + 499746025 = 24778^2 + 22355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113695309 - 2⁴ = 1113695293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113695339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556847654 + 556847655.

It is an arithmetic number, because the mean of its divisors is an integer number (556847655).

Almost surely, 2^1113695309 is an apocalyptic number.

It is an amenable number.

1113695309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113695309 is an equidigital number, since it uses as much as digits as its factorization.

1113695309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 1113695309 is about 33372.0737893227. The cubic root of 1113695309 is about 1036.5465173123.

The spelling of 1113695309 in words is "one billion, one hundred thirteen million, six hundred ninety-five thousand, three hundred nine".