13838164805 has 4 divisors (see below), whose sum is σ = 16605797772. Its totient is φ = 11070531840.

The previous prime is 13838164787. The next prime is 13838164807. The reversal of 13838164805 is 50846183831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50846183831 = 117899 ⋅431269.

It can be written as a sum of positive squares in 2 ways, for example, as 8995953409 + 4842211396 = 94847^2 + 69586^2 .

It is not a de Polignac number, because 13838164805 - 2¹² = 13838160709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13838164805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13838164807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383816476 + ... + 1383816485.

It is an arithmetic number, because the mean of its divisors is an integer number (4151449443).

Almost surely, 2^13838164805 is an apocalyptic number.

It is an amenable number.

13838164805 is a deficient number, since it is larger than the sum of its proper divisors (2767632967).

13838164805 is an equidigital number, since it uses as much as digits as its factorization.

13838164805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767632966.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 13838164805 in words is "thirteen billion, eight hundred thirty-eight million, one hundred sixty-four thousand, eight hundred five".