381546448487 has 2 divisors, whose sum is σ = 381546448488. Its totient is φ = 381546448486.

The previous prime is 381546448447. The next prime is 381546448519. The reversal of 381546448487 is 784844645183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381546448487 - 2¹⁴ = 381546432103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381546448447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190773224243 + 190773224244.

It is an arithmetic number, because the mean of its divisors is an integer number (190773224244).

Almost surely, 2^381546448487 is an apocalyptic number.

381546448487 is a deficient number, since it is larger than the sum of its proper divisors (1).

381546448487 is an equidigital number, since it uses as much as digits as its factorization.

381546448487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82575360, while the sum is 62.

The spelling of 381546448487 in words is "three hundred eighty-one billion, five hundred forty-six million, four hundred forty-eight thousand, four hundred eighty-seven".