1973701663 has 2 divisors, whose sum is σ = 1973701664. Its totient is φ = 1973701662.

The previous prime is 1973701601. The next prime is 1973701679. The reversal of 1973701663 is 3661073791.

It is a strong prime.

It is an emirp because it is prime and its reverse (3661073791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1973701663 - 2¹³ = 1973693471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973701463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986850831 + 986850832.

It is an arithmetic number, because the mean of its divisors is an integer number (986850832).

Almost surely, 2^1973701663 is an apocalyptic number.

1973701663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973701663 is an equidigital number, since it uses as much as digits as its factorization.

1973701663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 1973701663 is about 44426.3622526085. The cubic root of 1973701663 is about 1254.3743622141.

The spelling of 1973701663 in words is "one billion, nine hundred seventy-three million, seven hundred one thousand, six hundred sixty-three".