140438168 has 16 divisors (see below), whose sum is σ = 283577280. Its totient is φ = 64817568.

The previous prime is 140438167. The next prime is 140438183. The reversal of 140438168 is 861834041.

140438168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140438167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675080 + ... + 675287.

It is an arithmetic number, because the mean of its divisors is an integer number (17723580).

Almost surely, 2^140438168 is an apocalyptic number.

It is an amenable number.

140438168 is an abundant number, since it is smaller than the sum of its proper divisors (143139112).

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

140438168 is a wasteful number, since it uses less digits than its factorization.

140438168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350386 (or 1350382 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 140438168 is about 11850.6610786065. The cubic root of 140438168 is about 519.7905566783.

The spelling of 140438168 in words is "one hundred forty million, four hundred thirty-eight thousand, one hundred sixty-eight".