2158500163 has 4 divisors (see below), whose sum is σ = 2180752840. Its totient is φ = 2136247488.

The previous prime is 2158500139. The next prime is 2158500167. The reversal of 2158500163 is 3610058512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158500163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158500167) 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, 11126193 + ... + 11126386.

It is an arithmetic number, because the mean of its divisors is an integer number (545188210).

Almost surely, 2^2158500163 is an apocalyptic number.

2158500163 is a deficient number, since it is larger than the sum of its proper divisors (22252677).

2158500163 is an equidigital number, since it uses as much as digits as its factorization.

2158500163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22252676.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 2158500163 is about 46459.6616754793. The cubic root of 2158500163 is about 1292.3615502177.

Adding to 2158500163 its reverse (3610058512), we get a palindrome (5768558675).

The spelling of 2158500163 in words is "two billion, one hundred fifty-eight million, five hundred thousand, one hundred sixty-three".