12738165 has 16 divisors (see below), whose sum is σ = 22234176. Its totient is φ = 6176000.

The previous prime is 12738157. The next prime is 12738169. The reversal of 12738165 is 56183721.

It is not a de Polignac number, because 12738165 - 2³ = 12738157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12738169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38436 + ... + 38765.

It is an arithmetic number, because the mean of its divisors is an integer number (1389636).

Almost surely, 2^12738165 is an apocalyptic number.

12738165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12738165 is a deficient number, since it is larger than the sum of its proper divisors (9496011).

12738165 is a wasteful number, since it uses less digits than its factorization.

12738165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77220.

The product of its digits is 10080, while the sum is 33.

The square root of 12738165 is about 3569.0565980382. The cubic root of 12738165 is about 233.5441303669.

The spelling of 12738165 in words is "twelve million, seven hundred thirty-eight thousand, one hundred sixty-five".