1973873663 has 2 divisors, whose sum is σ = 1973873664. Its totient is φ = 1973873662.

The previous prime is 1973873623. The next prime is 1973873683. The reversal of 1973873663 is 3663783791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1973873663 - 2¹⁰ = 1973872639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973873623) 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, 986936831 + 986936832.

It is an arithmetic number, because the mean of its divisors is an integer number (986936832).

Almost surely, 2^1973873663 is an apocalyptic number.

1973873663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973873663 is an equidigital number, since it uses as much as digits as its factorization.

1973873663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 53.

The square root of 1973873663 is about 44428.2979980102. The cubic root of 1973873663 is about 1254.4107990149.

The spelling of 1973873663 in words is "one billion, nine hundred seventy-three million, eight hundred seventy-three thousand, six hundred sixty-three".