4638370989671 has 2 divisors, whose sum is σ = 4638370989672. Its totient is φ = 4638370989670.

The previous prime is 4638370989643. The next prime is 4638370989731. The reversal of 4638370989671 is 1769890738364.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4638370989671 - 2²² = 4638366795367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4638370989595 and 4638370989604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4638370989601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319185494835 + 2319185494836.

It is an arithmetic number, because the mean of its divisors is an integer number (2319185494836).

Almost surely, 2^{4638370989671} is an apocalyptic number.

4638370989671 is a deficient number, since it is larger than the sum of its proper divisors (1).

4638370989671 is an equidigital number, since it uses as much as digits as its factorization.

4638370989671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329204736, while the sum is 71.

The spelling of 4638370989671 in words is "four trillion, six hundred thirty-eight billion, three hundred seventy million, nine hundred eighty-nine thousand, six hundred seventy-one".