1648440047 has 2 divisors, whose sum is σ = 1648440048. Its totient is φ = 1648440046.

The previous prime is 1648440041. The next prime is 1648440049. The reversal of 1648440047 is 7400448461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1648440047 - 2⁶ = 1648439983 is a prime.

Together with 1648440049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648440041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824220023 + 824220024.

It is an arithmetic number, because the mean of its divisors is an integer number (824220024).

Almost surely, 2^1648440047 is an apocalyptic number.

1648440047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648440047 is an equidigital number, since it uses as much as digits as its factorization.

1648440047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 1648440047 is about 40600.9857885249. The cubic root of 1648440047 is about 1181.2932405175.

The spelling of 1648440047 in words is "one billion, six hundred forty-eight million, four hundred forty thousand, forty-seven".