38102381 has 2 divisors, whose sum is σ = 38102382. Its totient is φ = 38102380.

The previous prime is 38102347. The next prime is 38102437. The reversal of 38102381 is 18320183.

38102381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 586756 = 6125^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 38102381 - 2¹⁴ = 38085997 is a prime.

It is a super-2 number, since 2×38102381² = 2903582875738322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38102381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38102681) 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 as a sum of consecutive naturals, namely, 19051190 + 19051191.

It is an arithmetic number, because the mean of its divisors is an integer number (19051191).

Almost surely, 2^38102381 is an apocalyptic number.

It is an amenable number.

38102381 is a deficient number, since it is larger than the sum of its proper divisors (1).

38102381 is an equidigital number, since it uses as much as digits as its factorization.

38102381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 38102381 is about 6172.7126127822. The cubic root of 38102381 is about 336.4992018598.

It can be divided in two parts, 38102 and 381, that added together give a palindrome (38483).

The spelling of 38102381 in words is "thirty-eight million, one hundred two thousand, three hundred eighty-one".