1993631066519 has 2 divisors, whose sum is σ = 1993631066520. Its totient is φ = 1993631066518.

The previous prime is 1993631066443. The next prime is 1993631066527. The reversal of 1993631066519 is 9156601363991.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9156601363991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1993631066519 - 2⁸ = 1993631066263 is a prime.

It is a super-2 number, since 2×1993631066519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1993631066579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996815533259 + 996815533260.

It is an arithmetic number, because the mean of its divisors is an integer number (996815533260).

Almost surely, 2^{1993631066519} is an apocalyptic number.

1993631066519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993631066519 is an equidigital number, since it uses as much as digits as its factorization.

1993631066519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7085880, while the sum is 59.

The spelling of 1993631066519 in words is "one trillion, nine hundred ninety-three billion, six hundred thirty-one million, sixty-six thousand, five hundred nineteen".