15138165 has 16 divisors (see below), whose sum is σ = 27681408. Its totient is φ = 6920256.

The previous prime is 15138139. The next prime is 15138197. The reversal of 15138165 is 56183151.

It is not a de Polignac number, because 15138165 - 2⁵ = 15138133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71982 + ... + 72191.

It is an arithmetic number, because the mean of its divisors is an integer number (1730088).

Almost surely, 2^15138165 is an apocalyptic number.

15138165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15138165 is a deficient number, since it is larger than the sum of its proper divisors (12543243).

15138165 is a wasteful number, since it uses less digits than its factorization.

15138165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144188.

The product of its digits is 3600, while the sum is 30.

The square root of 15138165 is about 3890.7794848847. The cubic root of 15138165 is about 247.3761036863.

The spelling of 15138165 in words is "fifteen million, one hundred thirty-eight thousand, one hundred sixty-five".