381450218708 has 12 divisors (see below), whose sum is σ = 718886950740. Its totient is φ = 176053947072.

The previous prime is 381450218701. The next prime is 381450218713. The reversal of 381450218708 is 807812054183.

It can be written as a sum of positive squares in 2 ways, for example, as 263937007504 + 117513211204 = 513748^2 + 342802^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381450218701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667790513 + ... + 3667790616.

It is an arithmetic number, because the mean of its divisors is an integer number (59907245895).

Almost surely, 2^381450218708 is an apocalyptic number.

It is an amenable number.

381450218708 is a deficient number, since it is larger than the sum of its proper divisors (337436732032).

381450218708 is a wasteful number, since it uses less digits than its factorization.

381450218708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335581146 (or 7335581144 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 381450218708 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, seven hundred eight".