1143710855 has 16 divisors (see below), whose sum is σ = 1582403904. Its totient is φ = 777315840.

The previous prime is 1143710851. The next prime is 1143710863. The reversal of 1143710855 is 5580173411.

It is not a de Polignac number, because 1143710855 - 2² = 1143710851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143710851) 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 15 ways as a sum of consecutive naturals, for example, 140636 + ... + 148545.

It is an arithmetic number, because the mean of its divisors is an integer number (98900244).

Almost surely, 2^1143710855 is an apocalyptic number.

1143710855 is a deficient number, since it is larger than the sum of its proper divisors (438693049).

1143710855 is a wasteful number, since it uses less digits than its factorization.

1143710855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289306.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 1143710855 is about 33818.7944048868. The cubic root of 1143710855 is about 1045.7761851635.

The spelling of 1143710855 in words is "one billion, one hundred forty-three million, seven hundred ten thousand, eight hundred fifty-five".