1113161869 has 2 divisors, whose sum is σ = 1113161870. Its totient is φ = 1113161868.

The previous prime is 1113161867. The next prime is 1113161879. The reversal of 1113161869 is 9681613111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748733769 + 364428100 = 27363^2 + 19090^2 .

It is an emirp because it is prime and its reverse (9681613111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1113161869 - 2¹ = 1113161867 is a prime.

It is a super-2 number, since 2×1113161869² = 2478258693191146322, which contains 22 as substring.

Together with 1113161867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113161867) 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, 556580934 + 556580935.

It is an arithmetic number, because the mean of its divisors is an integer number (556580935).

Almost surely, 2^1113161869 is an apocalyptic number.

It is an amenable number.

1113161869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113161869 is an equidigital number, since it uses as much as digits as its factorization.

1113161869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 37.

The square root of 1113161869 is about 33364.0805208236. The cubic root of 1113161869 is about 1036.3809951761.

The spelling of 1113161869 in words is "one billion, one hundred thirteen million, one hundred sixty-one thousand, eight hundred sixty-nine".