38681371 has 2 divisors, whose sum is σ = 38681372. Its totient is φ = 38681370.

The previous prime is 38681351. The next prime is 38681399. The reversal of 38681371 is 17318683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38681371 - 2⁵ = 38681339 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38681371.

It is not a weakly prime, because it can be changed into another prime (38681351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19340685 + 19340686.

It is an arithmetic number, because the mean of its divisors is an integer number (19340686).

Almost surely, 2^38681371 is an apocalyptic number.

38681371 is a deficient number, since it is larger than the sum of its proper divisors (1).

38681371 is an equidigital number, since it uses as much as digits as its factorization.

38681371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 38681371 is about 6219.4349421792. The cubic root of 38681371 is about 338.1950807141.

It can be divided in two parts, 386813 and 71, that added together give a square (386884 = 622²).

The spelling of 38681371 in words is "thirty-eight million, six hundred eighty-one thousand, three hundred seventy-one".