1973283378641 has 2 divisors, whose sum is σ = 1973283378642. Its totient is φ = 1973283378640.

The previous prime is 1973283378617. The next prime is 1973283378701. The reversal of 1973283378641 is 1468733823791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1963652900416 + 9630478225 = 1401304^2 + 98135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973283378641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1973283378041) 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, 986641689320 + 986641689321.

It is an arithmetic number, because the mean of its divisors is an integer number (986641689321).

Almost surely, 2^{1973283378641} is an apocalyptic number.

It is an amenable number.

1973283378641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973283378641 is an equidigital number, since it uses as much as digits as its factorization.

1973283378641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 62.

The spelling of 1973283378641 in words is "one trillion, nine hundred seventy-three billion, two hundred eighty-three million, three hundred seventy-eight thousand, six hundred forty-one".