2165143046 has 16 divisors (see below), whose sum is σ = 3587811840. Its totient is φ = 971697480.

The previous prime is 2165143039. The next prime is 2165143049. The reversal of 2165143046 is 6403415612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165143049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621146 + ... + 624621.

It is an arithmetic number, because the mean of its divisors is an integer number (224238240).

Almost surely, 2^2165143046 is an apocalyptic number.

2165143046 is a deficient number, since it is larger than the sum of its proper divisors (1422668794).

2165143046 is a wasteful number, since it uses less digits than its factorization.

2165143046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245859.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2165143046 is about 46531.0976229876. The cubic root of 2165143046 is about 1293.6859597666.

Adding to 2165143046 its reverse (6403415612), we get a palindrome (8568558658).

The spelling of 2165143046 in words is "two billion, one hundred sixty-five million, one hundred forty-three thousand, forty-six".