2164550216 has 8 divisors (see below), whose sum is σ = 4058531670. Its totient is φ = 1082275104.

The previous prime is 2164550207. The next prime is 2164550237. The reversal of 2164550216 is 6120554612.

It can be written as a sum of positive squares in only one way, i.e., 1760138116 + 404412100 = 41954^2 + 20110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135284381 + ... + 135284396.

Almost surely, 2^2164550216 is an apocalyptic number.

It is an amenable number.

2164550216 is a deficient number, since it is larger than the sum of its proper divisors (1893981454).

2164550216 is a wasteful number, since it uses less digits than its factorization.

2164550216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270568783 (or 270568779 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2164550216 is about 46524.7269309558. The cubic root of 2164550216 is about 1293.5678758280.

The spelling of 2164550216 in words is "two billion, one hundred sixty-four million, five hundred fifty thousand, two hundred sixteen".