381450218627 has 2 divisors, whose sum is σ = 381450218628. Its totient is φ = 381450218626.

The previous prime is 381450218623. The next prime is 381450218647. The reversal of 381450218627 is 726812054183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381450218627 - 2² = 381450218623 is a prime.

It is not a weakly prime, because it can be changed into another prime (381450218621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190725109313 + 190725109314.

It is an arithmetic number, because the mean of its divisors is an integer number (190725109314).

Almost surely, 2^381450218627 is an apocalyptic number.

381450218627 is a deficient number, since it is larger than the sum of its proper divisors (1).

381450218627 is an equidigital number, since it uses as much as digits as its factorization.

381450218627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 381450218627 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, six hundred twenty-seven".