167964370349689 has 2 divisors, whose sum is σ = 167964370349690. Its totient is φ = 167964370349688.

The previous prime is 167964370349641. The next prime is 167964370349747. The reversal of 167964370349689 is 986943073469761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165908825913600 + 2055544436089 = 12880560^2 + 1433717^2 .

It is a cyclic number.

It is not a de Polignac number, because 167964370349689 - 2⁹ = 167964370349177 is a prime.

It is not a weakly prime, because it can be changed into another prime (167964370349609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83982185174844 + 83982185174845.

It is an arithmetic number, because the mean of its divisors is an integer number (83982185174845).

Almost surely, 2^{167964370349689} is an apocalyptic number.

It is an amenable number.

167964370349689 is a deficient number, since it is larger than the sum of its proper divisors (1).

167964370349689 is an equidigital number, since it uses as much as digits as its factorization.

167964370349689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8888527872, while the sum is 82.

The spelling of 167964370349689 in words is "one hundred sixty-seven trillion, nine hundred sixty-four billion, three hundred seventy million, three hundred forty-nine thousand, six hundred eighty-nine".