2166340507 has 2 divisors, whose sum is σ = 2166340508. Its totient is φ = 2166340506.

The previous prime is 2166340489. The next prime is 2166340541. The reversal of 2166340507 is 7050436612.

It is a happy number.

It is an a-pointer prime, because the next prime (2166340541) can be obtained adding 2166340507 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166340507 - 2²⁷ = 2032122779 is a prime.

It is not a weakly prime, because it can be changed into another prime (2166340577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083170253 + 1083170254.

It is an arithmetic number, because the mean of its divisors is an integer number (1083170254).

Almost surely, 2^2166340507 is an apocalyptic number.

2166340507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166340507 is an equidigital number, since it uses as much as digits as its factorization.

2166340507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 2166340507 is about 46543.9631638734. The cubic root of 2166340507 is about 1293.9244125227.

The spelling of 2166340507 in words is "two billion, one hundred sixty-six million, three hundred forty thousand, five hundred seven".