1821846630823 has 2 divisors, whose sum is σ = 1821846630824. Its totient is φ = 1821846630822.

The previous prime is 1821846630797. The next prime is 1821846630829. The reversal of 1821846630823 is 3280366481281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1821846630823 is a prime.

It is a super-2 number, since 2×1821846630823² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1821846630829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910923315411 + 910923315412.

It is an arithmetic number, because the mean of its divisors is an integer number (910923315412).

Almost surely, 2^{1821846630823} is an apocalyptic number.

1821846630823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1821846630823 is an equidigital number, since it uses as much as digits as its factorization.

1821846630823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 1821846630823 in words is "one trillion, eight hundred twenty-one billion, eight hundred forty-six million, six hundred thirty thousand, eight hundred twenty-three".