2166738873 has 16 divisors (see below), whose sum is σ = 3128414016. Its totient is φ = 1326006720.

The previous prime is 2166738839. The next prime is 2166738877. The reversal of 2166738873 is 3788376612.

2166738873 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2166738873 - 2⁸ = 2166738617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2166738877) 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, 146415 + ... + 160532.

It is an arithmetic number, because the mean of its divisors is an integer number (195525876).

Almost surely, 2^2166738873 is an apocalyptic number.

It is an amenable number.

2166738873 is a deficient number, since it is larger than the sum of its proper divisors (961675143).

2166738873 is a wasteful number, since it uses less digits than its factorization.

2166738873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307144.

The product of its digits is 2032128, while the sum is 51.

The square root of 2166738873 is about 46548.2424265407. The cubic root of 2166738873 is about 1294.0037204460.

The spelling of 2166738873 in words is "two billion, one hundred sixty-six million, seven hundred thirty-eight thousand, eight hundred seventy-three".