1099850881 has 2 divisors, whose sum is σ = 1099850882. Its totient is φ = 1099850880.

The previous prime is 1099850867. The next prime is 1099850909. The reversal of 1099850881 is 1880589901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985018225 + 114832656 = 31385^2 + 10716^2 .

It is an emirp because it is prime and its reverse (1880589901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1099850881 - 2⁵ = 1099850849 is a prime.

It is a super-2 number, since 2×1099850881² = 2419343920872952322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1099850821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549925440 + 549925441.

It is an arithmetic number, because the mean of its divisors is an integer number (549925441).

Almost surely, 2^1099850881 is an apocalyptic number.

It is an amenable number.

1099850881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099850881 is an equidigital number, since it uses as much as digits as its factorization.

1099850881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 49.

The square root of 1099850881 is about 33163.9997738512. Note that the first 3 decimals coincide. The cubic root of 1099850881 is about 1032.2334671125.

The spelling of 1099850881 in words is "one billion, ninety-nine million, eight hundred fifty thousand, eight hundred eighty-one".