1099648897 has 2 divisors, whose sum is σ = 1099648898. Its totient is φ = 1099648896.

The previous prime is 1099648889. The next prime is 1099648937. The reversal of 1099648897 is 7988469901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605209201 + 494439696 = 24601^2 + 22236^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099648897 - 2³ = 1099648889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099648097) 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, 549824448 + 549824449.

It is an arithmetic number, because the mean of its divisors is an integer number (549824449).

Almost surely, 2^1099648897 is an apocalyptic number.

It is an amenable number.

1099648897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099648897 is an equidigital number, since it uses as much as digits as its factorization.

1099648897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The square root of 1099648897 is about 33160.9544042387. The cubic root of 1099648897 is about 1032.1702744825.

The spelling of 1099648897 in words is "one billion, ninety-nine million, six hundred forty-eight thousand, eight hundred ninety-seven".