2165154167 has 4 divisors (see below), whose sum is σ = 2361986376. Its totient is φ = 1968321960.

The previous prime is 2165154163. The next prime is 2165154203. The reversal of 2165154167 is 7614515612.

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

It is not a de Polignac number, because 2165154167 - 2² = 2165154163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2165154167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165154163) 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, 98416088 + ... + 98416109.

It is an arithmetic number, because the mean of its divisors is an integer number (590496594).

Almost surely, 2^2165154167 is an apocalyptic number.

2165154167 is a deficient number, since it is larger than the sum of its proper divisors (196832209).

2165154167 is a wasteful number, since it uses less digits than its factorization.

2165154167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196832208.

The product of its digits is 50400, while the sum is 38.

The square root of 2165154167 is about 46531.2171235613. The cubic root of 2165154167 is about 1293.6881747175.

Adding to 2165154167 its reverse (7614515612), we get a palindrome (9779669779).

The spelling of 2165154167 in words is "two billion, one hundred sixty-five million, one hundred fifty-four thousand, one hundred sixty-seven".