38172165 has 8 divisors (see below), whose sum is σ = 61075488. Its totient is φ = 20358480.

The previous prime is 38172163. The next prime is 38172209. The reversal of 38172165 is 56127183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38172165 - 2¹ = 38172163 is a prime.

It is a super-2 number, since 2×38172165² = 2914228361574450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38172163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272391 + ... + 1272420.

It is an arithmetic number, because the mean of its divisors is an integer number (7634436).

Almost surely, 2^38172165 is an apocalyptic number.

It is an amenable number.

38172165 is a deficient number, since it is larger than the sum of its proper divisors (22903323).

38172165 is a wasteful number, since it uses less digits than its factorization.

38172165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544819.

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

The square root of 38172165 is about 6178.3626471744. The cubic root of 38172165 is about 336.7045078314.

The spelling of 38172165 in words is "thirty-eight million, one hundred seventy-two thousand, one hundred sixty-five".