1683395943401 has 2 divisors, whose sum is σ = 1683395943402. Its totient is φ = 1683395943400.

The previous prime is 1683395943377. The next prime is 1683395943407. The reversal of 1683395943401 is 1043495933861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052604181225 + 630791762176 = 1025965^2 + 794224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1683395943401 - 2⁶ = 1683395943337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1683395943407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841697971700 + 841697971701.

It is an arithmetic number, because the mean of its divisors is an integer number (841697971701).

Almost surely, 2^{1683395943401} is an apocalyptic number.

It is an amenable number.

1683395943401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683395943401 is an equidigital number, since it uses as much as digits as its factorization.

1683395943401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 1683395943401 in words is "one trillion, six hundred eighty-three billion, three hundred ninety-five million, nine hundred forty-three thousand, four hundred one".