1648663699 has 2 divisors, whose sum is σ = 1648663700. Its totient is φ = 1648663698.

The previous prime is 1648663673. The next prime is 1648663711. The reversal of 1648663699 is 9963668461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1648663699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648663619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824331849 + 824331850.

It is an arithmetic number, because the mean of its divisors is an integer number (824331850).

Almost surely, 2^1648663699 is an apocalyptic number.

1648663699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648663699 is an equidigital number, since it uses as much as digits as its factorization.

1648663699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 58.

The square root of 1648663699 is about 40603.7399632103. The cubic root of 1648663699 is about 1181.3466620637.

The spelling of 1648663699 in words is "one billion, six hundred forty-eight million, six hundred sixty-three thousand, six hundred ninety-nine".