1863997444241 has 2 divisors, whose sum is σ = 1863997444242. Its totient is φ = 1863997444240.

The previous prime is 1863997444219. The next prime is 1863997444249. The reversal of 1863997444241 is 1424447993681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1660221942016 + 203775502225 = 1288496^2 + 451415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863997444241 - 2¹⁸ = 1863997182097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1863997444249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931998722120 + 931998722121.

It is an arithmetic number, because the mean of its divisors is an integer number (931998722121).

Almost surely, 2^{1863997444241} is an apocalyptic number.

It is an amenable number.

1863997444241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863997444241 is an equidigital number, since it uses as much as digits as its factorization.

1863997444241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41803776, while the sum is 62.

The spelling of 1863997444241 in words is "one trillion, eight hundred sixty-three billion, nine hundred ninety-seven million, four hundred forty-four thousand, two hundred forty-one".