381689141 has 2 divisors, whose sum is σ = 381689142. Its totient is φ = 381689140.

The previous prime is 381689129. The next prime is 381689153. The reversal of 381689141 is 141986183.

It is a balanced prime because it is at equal distance from previous prime (381689129) and next prime (381689153).

It can be written as a sum of positive squares in only one way, i.e., 192626641 + 189062500 = 13879^2 + 13750^2 .

It is a cyclic number.

It is not a de Polignac number, because 381689141 - 2¹⁰ = 381688117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381689101) 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, 190844570 + 190844571.

It is an arithmetic number, because the mean of its divisors is an integer number (190844571).

Almost surely, 2^381689141 is an apocalyptic number.

It is an amenable number.

381689141 is a deficient number, since it is larger than the sum of its proper divisors (1).

381689141 is an equidigital number, since it uses as much as digits as its factorization.

381689141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 381689141 is about 19536.8662021318. The cubic root of 381689141 is about 725.3872784624.

The spelling of 381689141 in words is "three hundred eighty-one million, six hundred eighty-nine thousand, one hundred forty-one".