1190869081 has 2 divisors, whose sum is σ = 1190869082. Its totient is φ = 1190869080.

The previous prime is 1190869037. The next prime is 1190869111. The reversal of 1190869081 is 1809680911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660027481 + 530841600 = 25691^2 + 23040^2 .

It is an emirp because it is prime and its reverse (1809680911) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1806980611 and 1160896081.

It is a cyclic number.

It is not a de Polignac number, because 1190869081 - 2¹⁵ = 1190836313 is a prime.

It is a super-2 number, since 2×1190869081² = 2836338336163569122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1190069081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595434540 + 595434541.

It is an arithmetic number, because the mean of its divisors is an integer number (595434541).

Almost surely, 2^1190869081 is an apocalyptic number.

It is an amenable number.

1190869081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1190869081 is an equidigital number, since it uses as much as digits as its factorization.

1190869081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 43.

The square root of 1190869081 is about 34508.9710220401. The cubic root of 1190869081 is about 1059.9564124120.

The spelling of 1190869081 in words is "one billion, one hundred ninety million, eight hundred sixty-nine thousand, eighty-one".