1144787887 has 2 divisors, whose sum is σ = 1144787888. Its totient is φ = 1144787886.

The previous prime is 1144787857. The next prime is 1144787983. The reversal of 1144787887 is 7887874411.

It is a weak prime.

It is an emirp because it is prime and its reverse (7887874411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1144787887 - 2⁷ = 1144787759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144787827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572393943 + 572393944.

It is an arithmetic number, because the mean of its divisors is an integer number (572393944).

Almost surely, 2^1144787887 is an apocalyptic number.

1144787887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144787887 is an equidigital number, since it uses as much as digits as its factorization.

1144787887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2809856, while the sum is 55.

The square root of 1144787887 is about 33834.7142296193. The cubic root of 1144787887 is about 1046.1043511622.

The spelling of 1144787887 in words is "one billion, one hundred forty-four million, seven hundred eighty-seven thousand, eight hundred eighty-seven".