17946463939 has 2 divisors, whose sum is σ = 17946463940. Its totient is φ = 17946463938.

The previous prime is 17946463903. The next prime is 17946463963. The reversal of 17946463939 is 93936464971.

It is a strong prime.

It is an emirp because it is prime and its reverse (93936464971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17946463939 - 2⁷ = 17946463811 is a prime.

It is not a weakly prime, because it can be changed into another prime (17946463999) 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, 8973231969 + 8973231970.

It is an arithmetic number, because the mean of its divisors is an integer number (8973231970).

Almost surely, 2^17946463939 is an apocalyptic number.

17946463939 is a deficient number, since it is larger than the sum of its proper divisors (1).

17946463939 is an equidigital number, since it uses as much as digits as its factorization.

17946463939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 61.

The spelling of 17946463939 in words is "seventeen billion, nine hundred forty-six million, four hundred sixty-three thousand, nine hundred thirty-nine".