18373432943 has 2 divisors, whose sum is σ = 18373432944. Its totient is φ = 18373432942.

The previous prime is 18373432897. The next prime is 18373433047. The reversal of 18373432943 is 34923437381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18373432943 - 2¹⁴ = 18373416559 is a prime.

It is a super-2 number, since 2×18373432943² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18373432543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9186716471 + 9186716472.

It is an arithmetic number, because the mean of its divisors is an integer number (9186716472).

Almost surely, 2^18373432943 is an apocalyptic number.

18373432943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18373432943 is an equidigital number, since it uses as much as digits as its factorization.

18373432943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 47.

The spelling of 18373432943 in words is "eighteen billion, three hundred seventy-three million, four hundred thirty-two thousand, nine hundred forty-three".