143861646 has 16 divisors (see below), whose sum is σ = 288281808. Its totient is φ = 47860800.

The previous prime is 143861629. The next prime is 143861657. The reversal of 143861646 is 646168341.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 19885 + ... + 26136.

It is an arithmetic number, because the mean of its divisors is an integer number (18017613).

Almost surely, 2^143861646 is an apocalyptic number.

143861646 is an abundant number, since it is smaller than the sum of its proper divisors (144420162).

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

143861646 is a wasteful number, since it uses less digits than its factorization.

143861646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46547.

The product of its digits is 82944, while the sum is 39.

The square root of 143861646 is about 11994.2338646535. The cubic root of 143861646 is about 523.9803592856.

The spelling of 143861646 in words is "one hundred forty-three million, eight hundred sixty-one thousand, six hundred forty-six".