168043438 has 8 divisors (see below), whose sum is σ = 252144432. Its totient is φ = 83995296.

The previous prime is 168043433. The next prime is 168043459. The reversal of 168043438 is 834340861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 168043397 and 168043406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168043433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3970 + ... + 18757.

It is an arithmetic number, because the mean of its divisors is an integer number (31518054).

Almost surely, 2^168043438 is an apocalyptic number.

168043438 is a deficient number, since it is larger than the sum of its proper divisors (84100994).

168043438 is a wasteful number, since it uses less digits than its factorization.

168043438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26426.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 168043438 is about 12963.1569457444. The cubic root of 168043438 is about 551.8323875862.

The spelling of 168043438 in words is "one hundred sixty-eight million, forty-three thousand, four hundred thirty-eight".