2163261167 has 4 divisors (see below), whose sum is σ = 2163358536. Its totient is φ = 2163163800.

The previous prime is 2163261143. The next prime is 2163261173. The reversal of 2163261167 is 7611623612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2163261167 - 2¹⁶ = 2163195631 is a prime.

It is a super-3 number, since 3×2163261167³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163261367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768 + ... + 65834.

It is an arithmetic number, because the mean of its divisors is an integer number (540839634).

Almost surely, 2^2163261167 is an apocalyptic number.

2163261167 is a deficient number, since it is larger than the sum of its proper divisors (97369).

2163261167 is an equidigital number, since it uses as much as digits as its factorization.

2163261167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97368.

The product of its digits is 18144, while the sum is 35.

The square root of 2163261167 is about 46510.8714925876. The cubic root of 2163261167 is about 1293.3110397915.

Adding to 2163261167 its reverse (7611623612), we get a palindrome (9774884779).

The spelling of 2163261167 in words is "two billion, one hundred sixty-three million, two hundred sixty-one thousand, one hundred sixty-seven".