2164571773 has 24 divisors (see below), whose sum is σ = 2686955328. Its totient is φ = 1707368832.

The previous prime is 2164571771. The next prime is 2164571777. The reversal of 2164571773 is 3771754612.

It is a happy number.

It is not a de Polignac number, because 2164571773 - 2¹ = 2164571771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164571771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407865 + ... + 413137.

It is an arithmetic number, because the mean of its divisors is an integer number (111956472).

Almost surely, 2^2164571773 is an apocalyptic number.

It is an amenable number.

2164571773 is a deficient number, since it is larger than the sum of its proper divisors (522383555).

2164571773 is a wasteful number, since it uses less digits than its factorization.

2164571773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653 (or 5640 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 2164571773 is about 46524.9586028832. The cubic root of 2164571773 is about 1293.5721700766.

The spelling of 2164571773 in words is "two billion, one hundred sixty-four million, five hundred seventy-one thousand, seven hundred seventy-three".