17934321943 has 2 divisors, whose sum is σ = 17934321944. Its totient is φ = 17934321942.

The previous prime is 17934321917. The next prime is 17934321959. The reversal of 17934321943 is 34912343971.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17934321943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17934321893 and 17934321902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17934321913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8967160971 + 8967160972.

It is an arithmetic number, because the mean of its divisors is an integer number (8967160972).

Almost surely, 2^17934321943 is an apocalyptic number.

17934321943 is a deficient number, since it is larger than the sum of its proper divisors (1).

17934321943 is an equidigital number, since it uses as much as digits as its factorization.

17934321943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The spelling of 17934321943 in words is "seventeen billion, nine hundred thirty-four million, three hundred twenty-one thousand, nine hundred forty-three".