1802163837641 has 2 divisors, whose sum is σ = 1802163837642. Its totient is φ = 1802163837640.

The previous prime is 1802163837631. The next prime is 1802163837647. The reversal of 1802163837641 is 1467383612081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1461207110416 + 340956727225 = 1208804^2 + 583915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1802163837641 - 2³⁰ = 1801090095817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1802163837641.

It is not a weakly prime, because it can be changed into another prime (1802163837647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901081918820 + 901081918821.

It is an arithmetic number, because the mean of its divisors is an integer number (901081918821).

Almost surely, 2^{1802163837641} is an apocalyptic number.

It is an amenable number.

1802163837641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802163837641 is an equidigital number, since it uses as much as digits as its factorization.

1802163837641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 1802163837641 in words is "one trillion, eight hundred two billion, one hundred sixty-three million, eight hundred thirty-seven thousand, six hundred forty-one".