38985613 has 2 divisors, whose sum is σ = 38985614. Its totient is φ = 38985612.

The previous prime is 38985601. The next prime is 38985637. The reversal of 38985613 is 31658983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20820969 + 18164644 = 4563^2 + 4262^2 .

It is an emirp because it is prime and its reverse (31658983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38985613 - 2²¹ = 36888461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38985613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38985643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19492806 + 19492807.

It is an arithmetic number, because the mean of its divisors is an integer number (19492807).

Almost surely, 2^38985613 is an apocalyptic number.

It is an amenable number.

38985613 is a deficient number, since it is larger than the sum of its proper divisors (1).

38985613 is an equidigital number, since it uses as much as digits as its factorization.

38985613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 38985613 is about 6243.8460102728. The cubic root of 38985613 is about 339.0794388658.

The spelling of 38985613 in words is "thirty-eight million, nine hundred eighty-five thousand, six hundred thirteen".