38172609 has 12 divisors (see below), whose sum is σ = 55351296. Its totient is φ = 25350072.

The previous prime is 38172593. The next prime is 38172611. The reversal of 38172609 is 90627183.

38172609 is a `hidden beast` number, since 38 + 17 + 2 + 609 = 666.

38172609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38172609 - 2⁴ = 38172593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38172689) 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 11 ways as a sum of consecutive naturals, for example, 5697 + ... + 10430.

It is an arithmetic number, because the mean of its divisors is an integer number (4612608).

Almost surely, 2^38172609 is an apocalyptic number.

It is an amenable number.

38172609 is a deficient number, since it is larger than the sum of its proper divisors (17178687).

38172609 is a wasteful number, since it uses less digits than its factorization.

38172609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396 (or 16393 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 38172609 is about 6178.3985789199. The cubic root of 38172609 is about 336.7058132872.

It can be divided in two parts, 38172 and 609, that added together give a triangular number (38781 = T₂₇₈).

The spelling of 38172609 in words is "thirty-eight million, one hundred seventy-two thousand, six hundred nine".