381450218741 has 2 divisors, whose sum is σ = 381450218742. Its totient is φ = 381450218740.

The previous prime is 381450218729. The next prime is 381450218759. The reversal of 381450218741 is 147812054183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320077588516 + 61372630225 = 565754^2 + 247735^2 .

It is an emirp because it is prime and its reverse (147812054183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381450218741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381450218692 and 381450218701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381450218701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190725109370 + 190725109371.

It is an arithmetic number, because the mean of its divisors is an integer number (190725109371).

Almost surely, 2^381450218741 is an apocalyptic number.

It is an amenable number.

381450218741 is a deficient number, since it is larger than the sum of its proper divisors (1).

381450218741 is an equidigital number, since it uses as much as digits as its factorization.

381450218741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 381450218741 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, seven hundred forty-one".