168040437 has 8 divisors (see below), whose sum is σ = 227851680. Its totient is φ = 110128080.

The previous prime is 168040399. The next prime is 168040451. The reversal of 168040437 is 734040861.

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

It is not a de Polignac number, because 168040437 - 2⁶ = 168040373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168040398 and 168040407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168040337) 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, 474514 + ... + 474867.

It is an arithmetic number, because the mean of its divisors is an integer number (28481460).

Almost surely, 2^168040437 is an apocalyptic number.

It is an amenable number.

168040437 is a deficient number, since it is larger than the sum of its proper divisors (59811243).

168040437 is an equidigital number, since it uses as much as digits as its factorization.

168040437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949443.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 168040437 is about 12963.0411941026. The cubic root of 168040437 is about 551.8291026045.

The spelling of 168040437 in words is "one hundred sixty-eight million, forty thousand, four hundred thirty-seven".