216434167 has 4 divisors (see below), whose sum is σ = 219173920. Its totient is φ = 213694416.

The previous prime is 216434137. The next prime is 216434173. The reversal of 216434167 is 761434612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216434167 - 2¹⁵ = 216401399 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 (216434137) 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, 1369758 + ... + 1369915.

It is an arithmetic number, because the mean of its divisors is an integer number (54793480).

Almost surely, 2^216434167 is an apocalyptic number.

216434167 is a deficient number, since it is larger than the sum of its proper divisors (2739753).

216434167 is an equidigital number, since it uses as much as digits as its factorization.

216434167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739752.

The product of its digits is 24192, while the sum is 34.

The square root of 216434167 is about 14711.7017030662. The cubic root of 216434167 is about 600.4017374332.

Adding to 216434167 its reverse (761434612), we get a palindrome (977868779).

The spelling of 216434167 in words is "two hundred sixteen million, four hundred thirty-four thousand, one hundred sixty-seven".