1814131973 has 2 divisors, whose sum is σ = 1814131974. Its totient is φ = 1814131972.

The previous prime is 1814131939. The next prime is 1814132011. The reversal of 1814131973 is 3791314181.

It is an a-pointer prime, because the next prime (1814132011) can be obtained adding 1814131973 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120441729 + 693690244 = 33473^2 + 26338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1814131973 - 2¹⁰ = 1814130949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1814131073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 907065986 + 907065987.

It is an arithmetic number, because the mean of its divisors is an integer number (907065987).

Almost surely, 2^1814131973 is an apocalyptic number.

It is an amenable number.

1814131973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1814131973 is an equidigital number, since it uses as much as digits as its factorization.

1814131973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 1814131973 is about 42592.6281532380. The cubic root of 1814131973 is about 1219.6155675337.

The spelling of 1814131973 in words is "one billion, eight hundred fourteen million, one hundred thirty-one thousand, nine hundred seventy-three".