30138165 has 48 divisors (see below), whose sum is σ = 56055168. Its totient is φ = 14940288.

The previous prime is 30138149. The next prime is 30138167. The reversal of 30138165 is 56183103.

It is not a de Polignac number, because 30138165 - 2⁴ = 30138149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30138167) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 37902 + ... + 38688.

It is an arithmetic number, because the mean of its divisors is an integer number (1167816).

Almost surely, 2^30138165 is an apocalyptic number.

It is an amenable number.

30138165 is a deficient number, since it is larger than the sum of its proper divisors (25917003).

30138165 is a wasteful number, since it uses less digits than its factorization.

30138165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 30138165 is about 5489.8237676632. The cubic root of 30138165 is about 311.1995321473.

It can be divided in two parts, 30138 and 165, that added together give a palindrome (30303).

The spelling of 30138165 in words is "thirty million, one hundred thirty-eight thousand, one hundred sixty-five".