10938858409 has 2 divisors, whose sum is σ = 10938858410. Its totient is φ = 10938858408.

The previous prime is 10938858383. The next prime is 10938858433. The reversal of 10938858409 is 90485883901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6884352784 + 4054505625 = 82972^2 + 63675^2 .

It is a cyclic number.

It is not a de Polignac number, because 10938858409 - 2¹³ = 10938850217 is a prime.

It is a super-2 number, since 2×10938858409² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10938858409.

It is not a weakly prime, because it can be changed into another prime (10938858449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5469429204 + 5469429205.

It is an arithmetic number, because the mean of its divisors is an integer number (5469429205).

Almost surely, 2^10938858409 is an apocalyptic number.

It is an amenable number.

10938858409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10938858409 is an equidigital number, since it uses as much as digits as its factorization.

10938858409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 10938858409 in words is "ten billion, nine hundred thirty-eight million, eight hundred fifty-eight thousand, four hundred nine".