1843947464969 has 2 divisors, whose sum is σ = 1843947464970. Its totient is φ = 1843947464968.

The previous prime is 1843947464881. The next prime is 1843947464981. The reversal of 1843947464969 is 9694647493481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1263798659344 + 580148805625 = 1124188^2 + 761675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1843947464969 - 2⁸ = 1843947464713 is a prime.

It is a super-2 number, since 2×1843947464969² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1843947464896 and 1843947464905.

It is not a weakly prime, because it can be changed into another prime (1843947464069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921973732484 + 921973732485.

It is an arithmetic number, because the mean of its divisors is an integer number (921973732485).

Almost surely, 2^{1843947464969} is an apocalyptic number.

It is an amenable number.

1843947464969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1843947464969 is an equidigital number, since it uses as much as digits as its factorization.

1843947464969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128701952, while the sum is 74.

The spelling of 1843947464969 in words is "one trillion, eight hundred forty-three billion, nine hundred forty-seven million, four hundred sixty-four thousand, nine hundred sixty-nine".