1099381312 has 28 divisors (see below), whose sum is σ = 2182655020. Its totient is φ = 549421056.

The previous prime is 1099381307. The next prime is 1099381337. The reversal of 1099381312 is 2131839901.

It can be written as a sum of positive squares in 2 ways, for example, as 91699776 + 1007681536 = 9576^2 + 31744^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 218764 + ... + 223732.

It is an arithmetic number, because the mean of its divisors is an integer number (77951965).

Almost surely, 2^1099381312 is an apocalyptic number.

It is an amenable number.

1099381312 is a deficient number, since it is larger than the sum of its proper divisors (1083273708).

1099381312 is an equidigital number, since it uses as much as digits as its factorization.

1099381312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438 (or 8428 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1099381312 is about 33156.9195191592. The cubic root of 1099381312 is about 1032.0865460339.

The spelling of 1099381312 in words is "one billion, ninety-nine million, three hundred eighty-one thousand, three hundred twelve".