909395138213 has 2 divisors, whose sum is σ = 909395138214. Its totient is φ = 909395138212.

The previous prime is 909395138191. The next prime is 909395138227. The reversal of 909395138213 is 312831593909.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462553692769 + 446841445444 = 680113^2 + 668462^2 .

It is a cyclic number.

It is not a de Polignac number, because 909395138213 - 2¹⁸ = 909394876069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909395138413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454697569106 + 454697569107.

It is an arithmetic number, because the mean of its divisors is an integer number (454697569107).

Almost surely, 2^909395138213 is an apocalyptic number.

It is an amenable number.

909395138213 is a deficient number, since it is larger than the sum of its proper divisors (1).

909395138213 is an equidigital number, since it uses as much as digits as its factorization.

909395138213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The spelling of 909395138213 in words is "nine hundred nine billion, three hundred ninety-five million, one hundred thirty-eight thousand, two hundred thirteen".