38870185 has 4 divisors (see below), whose sum is σ = 46644228. Its totient is φ = 31096144.

The previous prime is 38870171. The next prime is 38870201. The reversal of 38870185 is 58107883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27741289 + 11128896 = 5267^2 + 3336^2 .

It is a cyclic number.

It is not a de Polignac number, because 38870185 - 2⁷ = 38870057 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3887014 + ... + 3887023.

It is an arithmetic number, because the mean of its divisors is an integer number (11661057).

Almost surely, 2^38870185 is an apocalyptic number.

It is an amenable number.

38870185 is a deficient number, since it is larger than the sum of its proper divisors (7774043).

38870185 is an equidigital number, since it uses as much as digits as its factorization.

38870185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774042.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 38870185 is about 6234.5958168914. The cubic root of 38870185 is about 338.7444609961.

The spelling of 38870185 in words is "thirty-eight million, eight hundred seventy thousand, one hundred eighty-five".