1646112667 has 2 divisors, whose sum is σ = 1646112668. Its totient is φ = 1646112666.

The previous prime is 1646112653. The next prime is 1646112701. The reversal of 1646112667 is 7662116461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1646112667 - 2⁷ = 1646112539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1646172667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 823056333 + 823056334.

It is an arithmetic number, because the mean of its divisors is an integer number (823056334).

Almost surely, 2^1646112667 is an apocalyptic number.

1646112667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1646112667 is an equidigital number, since it uses as much as digits as its factorization.

1646112667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 1646112667 is about 40572.3140454177. The cubic root of 1646112667 is about 1180.7370352383.

The spelling of 1646112667 in words is "one billion, six hundred forty-six million, one hundred twelve thousand, six hundred sixty-seven".