3138385 has 8 divisors (see below), whose sum is σ = 3775680. Its totient is φ = 2504304.

The previous prime is 3138383. The next prime is 3138391. The reversal of 3138385 is 5838313.

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

It is a cyclic number.

It is not a de Polignac number, because 3138385 - 2¹ = 3138383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3138383) 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 7 ways as a sum of consecutive naturals, for example, 2956 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (471960).

Almost surely, 2^3138385 is an apocalyptic number.

It is an amenable number.

3138385 is a deficient number, since it is larger than the sum of its proper divisors (637295).

3138385 is an equidigital number, since it uses as much as digits as its factorization.

3138385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607.

The product of its digits is 8640, while the sum is 31.

The square root of 3138385 is about 1771.5487574436. The cubic root of 3138385 is about 146.4093254782.

It can be divided in two parts, 31 and 38385, that added together give a 4-th power (38416 = 14⁴).

The spelling of 3138385 in words is "three million, one hundred thirty-eight thousand, three hundred eighty-five".