1667016667 has 2 divisors, whose sum is σ = 1667016668. Its totient is φ = 1667016666.

The previous prime is 1667016649. The next prime is 1667016671. The reversal of 1667016667 is 7666107661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1667016667 - 2¹¹ = 1667014619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1667016677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833508333 + 833508334.

It is an arithmetic number, because the mean of its divisors is an integer number (833508334).

Almost surely, 2^1667016667 is an apocalyptic number.

1667016667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1667016667 is an equidigital number, since it uses as much as digits as its factorization.

1667016667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 1667016667 is about 40829.1154324950. The cubic root of 1667016667 is about 1185.7140899439.

The spelling of 1667016667 in words is "one billion, six hundred sixty-seven million, sixteen thousand, six hundred sixty-seven".