1331630838487 has 2 divisors, whose sum is σ = 1331630838488. Its totient is φ = 1331630838486.

The previous prime is 1331630838463. The next prime is 1331630838497. The reversal of 1331630838487 is 7848380361331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331630838487 - 2¹¹ = 1331630836439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331630838437) 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, 665815419243 + 665815419244.

It is an arithmetic number, because the mean of its divisors is an integer number (665815419244).

Almost surely, 2^{1331630838487} is an apocalyptic number.

1331630838487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331630838487 is an equidigital number, since it uses as much as digits as its factorization.

1331630838487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 1331630838487 in words is "one trillion, three hundred thirty-one billion, six hundred thirty million, eight hundred thirty-eight thousand, four hundred eighty-seven".