1099185361 has 2 divisors, whose sum is σ = 1099185362. Its totient is φ = 1099185360.

The previous prime is 1099185349. The next prime is 1099185377. The reversal of 1099185361 is 1635819901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792760336 + 306425025 = 28156^2 + 17505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099185361 - 2¹⁷ = 1099054289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099185331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549592680 + 549592681.

It is an arithmetic number, because the mean of its divisors is an integer number (549592681).

Almost surely, 2^1099185361 is an apocalyptic number.

It is an amenable number.

1099185361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099185361 is an equidigital number, since it uses as much as digits as its factorization.

1099185361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 1099185361 is about 33153.9644839045. The cubic root of 1099185361 is about 1032.0252235412.

The spelling of 1099185361 in words is "one billion, ninety-nine million, one hundred eighty-five thousand, three hundred sixty-one".