18579432943 has 2 divisors, whose sum is σ = 18579432944. Its totient is φ = 18579432942.

The previous prime is 18579432931. The next prime is 18579432973. The reversal of 18579432943 is 34923497581.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18579432943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18579432973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9289716471 + 9289716472.

It is an arithmetic number, because the mean of its divisors is an integer number (9289716472).

Almost surely, 2^18579432943 is an apocalyptic number.

18579432943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18579432943 is an equidigital number, since it uses as much as digits as its factorization.

18579432943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The spelling of 18579432943 in words is "eighteen billion, five hundred seventy-nine million, four hundred thirty-two thousand, nine hundred forty-three".