38018313 has 12 divisors (see below), whose sum is σ = 55007940. Its totient is φ = 25302816.

The previous prime is 38018293. The next prime is 38018317. The reversal of 38018313 is 31381083.

It can be written as a sum of positive squares in 2 ways, for example, as 4875264 + 33143049 = 2208^2 + 5757^2 .

It is not a de Polignac number, because 38018313 - 2¹³ = 38010121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38018317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2643 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (4583995).

Almost surely, 2^38018313 is an apocalyptic number.

It is an amenable number.

38018313 is a deficient number, since it is larger than the sum of its proper divisors (16989627).

38018313 is a wasteful number, since it uses less digits than its factorization.

38018313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128 (or 7125 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 38018313 is about 6165.8992044956. The cubic root of 38018313 is about 336.2515388974.

Adding to 38018313 its reverse (31381083), we get a palindrome (69399396).

The spelling of 38018313 in words is "thirty-eight million, eighteen thousand, three hundred thirteen".