38161745 has 8 divisors (see below), whose sum is σ = 45908520. Its totient is φ = 30453120.

The previous prime is 38161733. The next prime is 38161751. The reversal of 38161745 is 54716183.

It can be written as a sum of positive squares in 4 ways, for example, as 3857296 + 34304449 = 1964^2 + 5857^2 .

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

It is not a de Polignac number, because 38161745 - 2⁴ = 38161729 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 7286 + ... + 11375.

It is an arithmetic number, because the mean of its divisors is an integer number (5738565).

Almost surely, 2^38161745 is an apocalyptic number.

It is an amenable number.

38161745 is a deficient number, since it is larger than the sum of its proper divisors (7746775).

38161745 is a wasteful number, since it uses less digits than its factorization.

38161745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19075.

The product of its digits is 20160, while the sum is 35.

The square root of 38161745 is about 6177.5193241300. The cubic root of 38161745 is about 336.6738678763.

It can be divided in two parts, 381 and 61745, that added together give a palindrome (62126).

The spelling of 38161745 in words is "thirty-eight million, one hundred sixty-one thousand, seven hundred forty-five".