143381894 has 16 divisors (see below), whose sum is σ = 216781488. Its totient is φ = 71124192.

The previous prime is 143381891. The next prime is 143381897. The reversal of 143381894 is 498183341.

It is an interprime number because it is at equal distance from previous prime (143381891) and next prime (143381897).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143381891) by changing a digit.

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, 179504 + ... + 180300.

It is an arithmetic number, because the mean of its divisors is an integer number (13548843).

Almost surely, 2^143381894 is an apocalyptic number.

143381894 is a deficient number, since it is larger than the sum of its proper divisors (73399594).

143381894 is a wasteful number, since it uses less digits than its factorization.

143381894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399.

The product of its digits is 82944, while the sum is 41.

The square root of 143381894 is about 11974.2178867766. The cubic root of 143381894 is about 523.3972514011.

The spelling of 143381894 in words is "one hundred forty-three million, three hundred eighty-one thousand, eight hundred ninety-four".