7143489644 has 6 divisors (see below), whose sum is σ = 12501106884. Its totient is φ = 3571744820.

The previous prime is 7143489623. The next prime is 7143489659. The reversal of 7143489644 is 4469843417.

It is a junction number, because it is equal to n+sod(n) for n = 7143489592 and 7143489601.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 892936202 + ... + 892936209.

It is an arithmetic number, because the mean of its divisors is an integer number (2083517814).

Almost surely, 2^7143489644 is an apocalyptic number.

It is an amenable number.

7143489644 is a deficient number, since it is larger than the sum of its proper divisors (5357617240).

7143489644 is a wasteful number, since it uses less digits than its factorization.

7143489644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785872415 (or 1785872413 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 50.

The square root of 7143489644 is about 84519.1673172423. The cubic root of 7143489644 is about 1925.9136288519.

The spelling of 7143489644 in words is "seven billion, one hundred forty-three million, four hundred eighty-nine thousand, six hundred forty-four".