167646849854389 has 2 divisors, whose sum is σ = 167646849854390. Its totient is φ = 167646849854388.

The previous prime is 167646849854371. The next prime is 167646849854423. The reversal of 167646849854389 is 983458948646761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167483586987025 + 163262867364 = 12941545^2 + 404058^2 .

It is a cyclic number.

It is not a de Polignac number, because 167646849854389 - 2⁹ = 167646849853877 is a prime.

It is a super-2 number, since 2×167646849854389² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167646849854359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83823424927194 + 83823424927195.

It is an arithmetic number, because the mean of its divisors is an integer number (83823424927195).

Almost surely, 2^{167646849854389} is an apocalyptic number.

It is an amenable number.

167646849854389 is a deficient number, since it is larger than the sum of its proper divisors (1).

167646849854389 is an equidigital number, since it uses as much as digits as its factorization.

167646849854389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60197437440, while the sum is 88.

The spelling of 167646849854389 in words is "one hundred sixty-seven trillion, six hundred forty-six billion, eight hundred forty-nine million, eight hundred fifty-four thousand, three hundred eighty-nine".