38681843 has 2 divisors, whose sum is σ = 38681844. Its totient is φ = 38681842.

The previous prime is 38681833. The next prime is 38681849. The reversal of 38681843 is 34818683.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38681843 - 2⁴ = 38681827 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 38681843.

It is not a weakly prime, because it can be changed into another prime (38681849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19340921 + 19340922.

It is an arithmetic number, because the mean of its divisors is an integer number (19340922).

Almost surely, 2^38681843 is an apocalyptic number.

38681843 is a deficient number, since it is larger than the sum of its proper divisors (1).

38681843 is an equidigital number, since it uses as much as digits as its factorization.

38681843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 41.

The square root of 38681843 is about 6219.4728876328. The cubic root of 38681843 is about 338.1964562895.

The spelling of 38681843 in words is "thirty-eight million, six hundred eighty-one thousand, eight hundred forty-three".