1648881407 has 2 divisors, whose sum is σ = 1648881408. Its totient is φ = 1648881406.

The previous prime is 1648881329. The next prime is 1648881433. The reversal of 1648881407 is 7041888461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1648881407 - 2⁸ = 1648881151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648881467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824440703 + 824440704.

It is an arithmetic number, because the mean of its divisors is an integer number (824440704).

Almost surely, 2^1648881407 is an apocalyptic number.

1648881407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648881407 is an equidigital number, since it uses as much as digits as its factorization.

1648881407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 1648881407 is about 40606.4207607615. The cubic root of 1648881407 is about 1181.3986591850.

The spelling of 1648881407 in words is "one billion, six hundred forty-eight million, eight hundred eighty-one thousand, four hundred seven".