1143487672 has 8 divisors (see below), whose sum is σ = 2144039400. Its totient is φ = 571743832.

The previous prime is 1143487601. The next prime is 1143487679. The reversal of 1143487672 is 2767843411.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143487679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71467972 + ... + 71467987.

It is an arithmetic number, because the mean of its divisors is an integer number (268004925).

Almost surely, 2^1143487672 is an apocalyptic number.

It is an amenable number.

1143487672 is a deficient number, since it is larger than the sum of its proper divisors (1000551728).

1143487672 is a wasteful number, since it uses less digits than its factorization.

1143487672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142935965 (or 142935961 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 1143487672 is about 33815.4945550113. The cubic root of 1143487672 is about 1045.7081567078.

The spelling of 1143487672 in words is "one billion, one hundred forty-three million, four hundred eighty-seven thousand, six hundred seventy-two".