2161502167 has 4 divisors (see below), whose sum is σ = 2358002376. Its totient is φ = 1965001960.

The previous prime is 2161502143. The next prime is 2161502177. The reversal of 2161502167 is 7612051612.

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 2161502167 - 2³¹ = 14018519 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 (2161502107) 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, 98250088 + ... + 98250109.

It is an arithmetic number, because the mean of its divisors is an integer number (589500594).

Almost surely, 2^2161502167 is an apocalyptic number.

2161502167 is a deficient number, since it is larger than the sum of its proper divisors (196500209).

2161502167 is a wasteful number, since it uses less digits than its factorization.

2161502167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196500208.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2161502167 is about 46491.9580895449. The cubic root of 2161502167 is about 1292.9604039038.

Adding to 2161502167 its reverse (7612051612), we get a palindrome (9773553779).

The spelling of 2161502167 in words is "two billion, one hundred sixty-one million, five hundred two thousand, one hundred sixty-seven".