1143346487 has 4 divisors (see below), whose sum is σ = 1167673056. Its totient is φ = 1119019920.

The previous prime is 1143346471. The next prime is 1143346499. The reversal of 1143346487 is 7846433411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143346487 - 2⁴ = 1143346471 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 (1143346187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12163214 + ... + 12163307.

It is an arithmetic number, because the mean of its divisors is an integer number (291918264).

Almost surely, 2^1143346487 is an apocalyptic number.

1143346487 is a deficient number, since it is larger than the sum of its proper divisors (24326569).

1143346487 is an equidigital number, since it uses as much as digits as its factorization.

1143346487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24326568.

The product of its digits is 193536, while the sum is 41.

The square root of 1143346487 is about 33813.4069120519. The cubic root of 1143346487 is about 1045.6651175081.

Adding to 1143346487 its reverse (7846433411), we get a palindrome (8989779898).

The spelling of 1143346487 in words is "one billion, one hundred forty-three million, three hundred forty-six thousand, four hundred eighty-seven".