1013738909 has 2 divisors, whose sum is σ = 1013738910. Its totient is φ = 1013738908.

The previous prime is 1013738893. The next prime is 1013738927. The reversal of 1013738909 is 9098373101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511754884 + 501984025 = 22622^2 + 22405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013738909 - 2⁴ = 1013738893 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 (1013738969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506869454 + 506869455.

It is an arithmetic number, because the mean of its divisors is an integer number (506869455).

Almost surely, 2^1013738909 is an apocalyptic number.

It is an amenable number.

1013738909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013738909 is an equidigital number, since it uses as much as digits as its factorization.

1013738909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 1013738909 is about 31839.2667786179. The cubic root of 1013738909 is about 1004.5588218945.

The spelling of 1013738909 in words is "one billion, thirteen million, seven hundred thirty-eight thousand, nine hundred nine".