2165211146 has 32 divisors (see below), whose sum is σ = 3789434880. Its totient is φ = 908660016.

The previous prime is 2165211131. The next prime is 2165211149. The reversal of 2165211146 is 6411125612.

It is not an unprimeable number, because it can be changed into a prime (2165211149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212255 + ... + 222221.

It is an arithmetic number, because the mean of its divisors is an integer number (118419840).

Almost surely, 2^2165211146 is an apocalyptic number.

2165211146 is a deficient number, since it is larger than the sum of its proper divisors (1624223734).

2165211146 is a wasteful number, since it uses less digits than its factorization.

2165211146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298.

The product of its digits is 2880, while the sum is 29.

The square root of 2165211146 is about 46531.8293859160. The cubic root of 2165211146 is about 1293.6995230106.

Adding to 2165211146 its reverse (6411125612), we get a palindrome (8576336758).

The spelling of 2165211146 in words is "two billion, one hundred sixty-five million, two hundred eleven thousand, one hundred forty-six".