1143751716 has 18 divisors (see below), whose sum is σ = 2891150262. Its totient is φ = 381250560.

The previous prime is 1143751673. The next prime is 1143751729. The reversal of 1143751716 is 6171573411.

It is a happy number.

1143751716 is a `hidden beast` number, since 114 + 375 + 171 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1128960000 + 14791716 = 33600^2 + 3846^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 31770881 = 1143751716 / (1 + 1 + 4 + 3 + 7 + 5 + 1 + 7 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15885405 + ... + 15885476.

It is an arithmetic number, because the mean of its divisors is an integer number (160619459).

Almost surely, 2^1143751716 is an apocalyptic number.

It is an amenable number.

1143751716 is an abundant number, since it is smaller than the sum of its proper divisors (1747398546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143751716 is a wasteful number, since it uses less digits than its factorization.

1143751716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31770891 (or 31770886 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 1143751716 is about 33819.3985162362. The cubic root of 1143751716 is about 1045.7886390548.

The spelling of 1143751716 in words is "one billion, one hundred forty-three million, seven hundred fifty-one thousand, seven hundred sixteen".