13438141929 has 27 divisors (see below), whose sum is σ = 20628692773. Its totient is φ = 8428065792.

The previous prime is 13438141841. The next prime is 13438141967. The reversal of 13438141929 is 92914183431.

The square root of 13438141929 is 115923.

It is a perfect power (a square), and thus also a powerful number.

13438141929 is a `hidden beast` number, since 13 + 438 + 14 + 192 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6158639529 + 7279502400 = 78477^2 + 85320^2 .

It is not a de Polignac number, because 13438141929 - 2¹¹ = 13438139881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13438141429) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5910937 + ... + 5913209.

Almost surely, 2^13438141929 is an apocalyptic number.

13438141929 is the 115923-rd square number.

13438141929 is the 57962-nd centered octagonal number.

It is an amenable number.

13438141929 is a deficient number, since it is larger than the sum of its proper divisors (7190550844).

13438141929 is an frugal number, since it uses more digits than its factorization.

13438141929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586 (or 2293 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The spelling of 13438141929 in words is "thirteen billion, four hundred thirty-eight million, one hundred forty-one thousand, nine hundred twenty-nine".