168968437 has 4 divisors (see below), whose sum is σ = 184329216. Its totient is φ = 153607660.

The previous prime is 168968417. The next prime is 168968447. The reversal of 168968437 is 734869861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734869861 = 11 ⋅66806351.

It is a cyclic number.

It is not a de Polignac number, because 168968437 - 2⁷ = 168968309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168968407) 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, 7680373 + ... + 7680394.

It is an arithmetic number, because the mean of its divisors is an integer number (46082304).

Almost surely, 2^168968437 is an apocalyptic number.

It is an amenable number.

168968437 is a deficient number, since it is larger than the sum of its proper divisors (15360779).

168968437 is a wasteful number, since it uses less digits than its factorization.

168968437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15360778.

The product of its digits is 1741824, while the sum is 52.

The square root of 168968437 is about 12998.7859817754. The cubic root of 168968437 is about 552.8430601481.

The spelling of 168968437 in words is "one hundred sixty-eight million, nine hundred sixty-eight thousand, four hundred thirty-seven".