38538165 has 16 divisors (see below), whose sum is σ = 61748928. Its totient is φ = 20524416.

The previous prime is 38538139. The next prime is 38538169. The reversal of 38538165 is 56183583.

It is not a de Polignac number, because 38538165 - 2⁷ = 38538037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38538169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12849 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (3859308).

Almost surely, 2^38538165 is an apocalyptic number.

It is an amenable number.

38538165 is a deficient number, since it is larger than the sum of its proper divisors (23210763).

38538165 is a wasteful number, since it uses less digits than its factorization.

38538165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668.

The product of its digits is 86400, while the sum is 39.

The square root of 38538165 is about 6207.9114845494. The cubic root of 38538165 is about 337.7772098336. Note that the first 3 decimals are identical.

It can be divided in two parts, 38 and 538165, that added together give a triangular number (538203 = T₁₀₃₇).

The spelling of 38538165 in words is "thirty-eight million, five hundred thirty-eight thousand, one hundred sixty-five".