1812883243 has 2 divisors, whose sum is σ = 1812883244. Its totient is φ = 1812883242.

The previous prime is 1812883223. The next prime is 1812883249. The reversal of 1812883243 is 3423882181.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1812883243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1812883196 and 1812883205.

It is not a weakly prime, because it can be changed into another prime (1812883249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906441621 + 906441622.

It is an arithmetic number, because the mean of its divisors is an integer number (906441622).

Almost surely, 2^1812883243 is an apocalyptic number.

1812883243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812883243 is an equidigital number, since it uses as much as digits as its factorization.

1812883243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 40.

The square root of 1812883243 is about 42577.9666376872. The cubic root of 1812883243 is about 1219.3356687278.

The spelling of 1812883243 in words is "one billion, eight hundred twelve million, eight hundred eighty-three thousand, two hundred forty-three".