1144786887 has 6 divisors (see below), whose sum is σ = 1653581072. Its totient is φ = 763191252.

The previous prime is 1144786883. The next prime is 1144786891. The reversal of 1144786887 is 7886874411.

It is an interprime number because it is at equal distance from previous prime (1144786883) and next prime (1144786891).

It is not a de Polignac number, because 1144786887 - 2² = 1144786883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144786883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63599263 + ... + 63599280.

Almost surely, 2^1144786887 is an apocalyptic number.

1144786887 is a deficient number, since it is larger than the sum of its proper divisors (508794185).

1144786887 is a wasteful number, since it uses less digits than its factorization.

1144786887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127198549 (or 127198546 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 1144786887 is about 33834.6994518941. The cubic root of 1144786887 is about 1046.1040465630.

The spelling of 1144786887 in words is "one billion, one hundred forty-four million, seven hundred eighty-six thousand, eight hundred eighty-seven".