1660506167 has 2 divisors, whose sum is σ = 1660506168. Its totient is φ = 1660506166.

The previous prime is 1660506163. The next prime is 1660506173. The reversal of 1660506167 is 7616050661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660506167 - 2² = 1660506163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1660506167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660506163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830253083 + 830253084.

It is an arithmetic number, because the mean of its divisors is an integer number (830253084).

Almost surely, 2^1660506167 is an apocalyptic number.

1660506167 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660506167 is an equidigital number, since it uses as much as digits as its factorization.

1660506167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1660506167 is about 40749.3087916838. The cubic root of 1660506167 is about 1184.1684819191.

The spelling of 1660506167 in words is "one billion, six hundred sixty million, five hundred six thousand, one hundred sixty-seven".