4166891867 has 2 divisors, whose sum is σ = 4166891868. Its totient is φ = 4166891866.

The previous prime is 4166891851. The next prime is 4166891891. The reversal of 4166891867 is 7681986614.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4166891867 - 2⁴ = 4166891851 is a prime.

It is not a weakly prime, because it can be changed into another prime (4166891167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083445933 + 2083445934.

It is an arithmetic number, because the mean of its divisors is an integer number (2083445934).

Almost surely, 2^4166891867 is an apocalyptic number.

4166891867 is a deficient number, since it is larger than the sum of its proper divisors (1).

4166891867 is an equidigital number, since it uses as much as digits as its factorization.

4166891867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The square root of 4166891867 is about 64551.4668075017. The cubic root of 4166891867 is about 1609.1779642913.

The spelling of 4166891867 in words is "four billion, one hundred sixty-six million, eight hundred ninety-one thousand, eight hundred sixty-seven".