381718081463 has 2 divisors, whose sum is σ = 381718081464. Its totient is φ = 381718081462.

The previous prime is 381718081397. The next prime is 381718081499. The reversal of 381718081463 is 364180817183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381718081463 - 2⁸ = 381718081207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381718081663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190859040731 + 190859040732.

It is an arithmetic number, because the mean of its divisors is an integer number (190859040732).

Almost surely, 2^381718081463 is an apocalyptic number.

381718081463 is a deficient number, since it is larger than the sum of its proper divisors (1).

381718081463 is an equidigital number, since it uses as much as digits as its factorization.

381718081463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 381718081463 in words is "three hundred eighty-one billion, seven hundred eighteen million, eighty-one thousand, four hundred sixty-three".