1199369161 has 2 divisors, whose sum is σ = 1199369162. Its totient is φ = 1199369160.

The previous prime is 1199369141. The next prime is 1199369177. The reversal of 1199369161 is 1619639911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084450761 + 114918400 = 32931^2 + 10720^2 .

It is an emirp because it is prime and its reverse (1619639911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1199369161 - 2¹⁵ = 1199336393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1199369111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599684580 + 599684581.

It is an arithmetic number, because the mean of its divisors is an integer number (599684581).

Almost surely, 2^1199369161 is an apocalyptic number.

It is an amenable number.

1199369161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199369161 is an equidigital number, since it uses as much as digits as its factorization.

1199369161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 46.

The square root of 1199369161 is about 34631.9095777290. The cubic root of 1199369161 is about 1062.4723236343.

The spelling of 1199369161 in words is "one billion, one hundred ninety-nine million, three hundred sixty-nine thousand, one hundred sixty-one".