38851985 has 8 divisors (see below), whose sum is σ = 46735656. Its totient is φ = 31006080.

The previous prime is 38851957. The next prime is 38851993. The reversal of 38851985 is 58915883.

It can be written as a sum of positive squares in 4 ways, for example, as 300304 + 38551681 = 548^2 + 6209^2 .

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

It is not a de Polignac number, because 38851985 - 2⁶ = 38851921 is a prime.

It is a Duffinian number.

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, 7124 + ... + 11333.

It is an arithmetic number, because the mean of its divisors is an integer number (5841957).

Almost surely, 2^38851985 is an apocalyptic number.

It is an amenable number.

38851985 is a deficient number, since it is larger than the sum of its proper divisors (7883671).

38851985 is a wasteful number, since it uses less digits than its factorization.

38851985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18883.

The product of its digits is 345600, while the sum is 47.

The square root of 38851985 is about 6233.1360485714. The cubic root of 38851985 is about 338.6915831784.

The spelling of 38851985 in words is "thirty-eight million, eight hundred fifty-one thousand, nine hundred eighty-five".