1135661867 has 2 divisors, whose sum is σ = 1135661868. Its totient is φ = 1135661866.

The previous prime is 1135661819. The next prime is 1135661971. The reversal of 1135661867 is 7681665311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135661867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135661467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567830933 + 567830934.

It is an arithmetic number, because the mean of its divisors is an integer number (567830934).

Almost surely, 2^1135661867 is an apocalyptic number.

1135661867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135661867 is an equidigital number, since it uses as much as digits as its factorization.

1135661867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 1135661867 is about 33699.5825938542. The cubic root of 1135661867 is about 1043.3171534632.

The spelling of 1135661867 in words is "one billion, one hundred thirty-five million, six hundred sixty-one thousand, eight hundred sixty-seven".