1816725418843 has 2 divisors, whose sum is σ = 1816725418844. Its totient is φ = 1816725418842.

The previous prime is 1816725418787. The next prime is 1816725418903. The reversal of 1816725418843 is 3488145276181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1816725418843 - 2⁹ = 1816725418331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1816725418043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 908362709421 + 908362709422.

It is an arithmetic number, because the mean of its divisors is an integer number (908362709422).

Almost surely, 2^{1816725418843} is an apocalyptic number.

1816725418843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816725418843 is an equidigital number, since it uses as much as digits as its factorization.

1816725418843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 58.

The spelling of 1816725418843 in words is "one trillion, eight hundred sixteen billion, seven hundred twenty-five million, four hundred eighteen thousand, eight hundred forty-three".