1069119991 has 2 divisors, whose sum is σ = 1069119992. Its totient is φ = 1069119990.

The previous prime is 1069119979. The next prime is 1069120009. The reversal of 1069119991 is 1999119601.

It is a weak prime.

It is an emirp because it is prime and its reverse (1999119601) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1666116901 and 1096116661.

It is a cyclic number.

It is not a de Polignac number, because 1069119991 - 2⁵ = 1069119959 is a prime.

It is a super-2 number, since 2×1069119991² = 2286035110311680162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1069719991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534559995 + 534559996.

It is an arithmetic number, because the mean of its divisors is an integer number (534559996).

Almost surely, 2^1069119991 is an apocalyptic number.

1069119991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069119991 is an equidigital number, since it uses as much as digits as its factorization.

1069119991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 46.

The square root of 1069119991 is about 32697.4003706717. The cubic root of 1069119991 is about 1022.5286457264.

The spelling of 1069119991 in words is "one billion, sixty-nine million, one hundred nineteen thousand, nine hundred ninety-one".