2166234907 has 2 divisors, whose sum is σ = 2166234908. Its totient is φ = 2166234906.

The previous prime is 2166234887. The next prime is 2166234937. The reversal of 2166234907 is 7094326612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166234907 - 2³¹ = 18751259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2166234907.

It is not a weakly prime, because it can be changed into another prime (2166234937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083117453 + 1083117454.

It is an arithmetic number, because the mean of its divisors is an integer number (1083117454).

Almost surely, 2^2166234907 is an apocalyptic number.

2166234907 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166234907 is an equidigital number, since it uses as much as digits as its factorization.

2166234907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 2166234907 is about 46542.8287387004. The cubic root of 2166234907 is about 1293.9033877211.

The spelling of 2166234907 in words is "two billion, one hundred sixty-six million, two hundred thirty-four thousand, nine hundred seven".