1161422887 has 2 divisors, whose sum is σ = 1161422888. Its totient is φ = 1161422886.

The previous prime is 1161422879. The next prime is 1161422903. The reversal of 1161422887 is 7882241611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161422887 - 2³ = 1161422879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161422987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580711443 + 580711444.

It is an arithmetic number, because the mean of its divisors is an integer number (580711444).

Almost surely, 2^1161422887 is an apocalyptic number.

1161422887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161422887 is an equidigital number, since it uses as much as digits as its factorization.

1161422887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 40.

The square root of 1161422887 is about 34079.6550305310. The cubic root of 1161422887 is about 1051.1470117122.

The spelling of 1161422887 in words is "one billion, one hundred sixty-one million, four hundred twenty-two thousand, eight hundred eighty-seven".