143385894 has 48 divisors (see below), whose sum is σ = 328735680. Its totient is φ = 45042480.

The previous prime is 143385857. The next prime is 143385901. The reversal of 143385894 is 498583341.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 71169 + ... + 73155.

It is an arithmetic number, because the mean of its divisors is an integer number (6848660).

Almost surely, 2^143385894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143385894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164367840).

143385894 is an abundant number, since it is smaller than the sum of its proper divisors (185349786).

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

143385894 is a wasteful number, since it uses less digits than its factorization.

143385894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225 (or 2222 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 143385894 is about 11974.3849111343. The cubic root of 143385894 is about 523.4021185185.

The spelling of 143385894 in words is "one hundred forty-three million, three hundred eighty-five thousand, eight hundred ninety-four".