2164045216 has 24 divisors (see below), whose sum is σ = 4261813920. Its totient is φ = 1081679808.

The previous prime is 2164045171. The next prime is 2164045217. The reversal of 2164045216 is 6125404612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2164045217) 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, 114315 + ... + 131893.

It is an arithmetic number, because the mean of its divisors is an integer number (177575580).

Almost surely, 2^2164045216 is an apocalyptic number.

It is an amenable number.

2164045216 is a deficient number, since it is larger than the sum of its proper divisors (2097768704).

2164045216 is a wasteful number, since it uses less digits than its factorization.

2164045216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21436 (or 21428 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2164045216 is about 46519.2993928326. The cubic root of 2164045216 is about 1293.4672694632.

Adding to 2164045216 its reverse (6125404612), we get a palindrome (8289449828).

The spelling of 2164045216 in words is "two billion, one hundred sixty-four million, forty-five thousand, two hundred sixteen".