1161842687 has 2 divisors, whose sum is σ = 1161842688. Its totient is φ = 1161842686.

The previous prime is 1161842683. The next prime is 1161842719. The reversal of 1161842687 is 7862481611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161842687 - 2² = 1161842683 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161842681) 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, 580921343 + 580921344.

It is an arithmetic number, because the mean of its divisors is an integer number (580921344).

Almost surely, 2^1161842687 is an apocalyptic number.

1161842687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161842687 is an equidigital number, since it uses as much as digits as its factorization.

1161842687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 1161842687 is about 34085.8135739783. The cubic root of 1161842687 is about 1051.2736432675.

The spelling of 1161842687 in words is "one billion, one hundred sixty-one million, eight hundred forty-two thousand, six hundred eighty-seven".