167438423 has 4 divisors (see below), whose sum is σ = 177287760. Its totient is φ = 157589088.

The previous prime is 167438419. The next prime is 167438441. The reversal of 167438423 is 324834761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324834761 = 647 ⋅502063.

It is a cyclic number.

It is not a de Polignac number, because 167438423 - 2² = 167438419 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 (167438483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4924643 + ... + 4924676.

It is an arithmetic number, because the mean of its divisors is an integer number (44321940).

Almost surely, 2^167438423 is an apocalyptic number.

167438423 is a deficient number, since it is larger than the sum of its proper divisors (9849337).

167438423 is an equidigital number, since it uses as much as digits as its factorization.

167438423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849336.

The product of its digits is 96768, while the sum is 38.

The square root of 167438423 is about 12939.7999598139. The cubic root of 167438423 is about 551.1693281646.

The spelling of 167438423 in words is "one hundred sixty-seven million, four hundred thirty-eight thousand, four hundred twenty-three".