164426764589 has 2 divisors, whose sum is σ = 164426764590. Its totient is φ = 164426764588.

The previous prime is 164426764577. The next prime is 164426764603. The reversal of 164426764589 is 985467624461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129648244489 + 34778520100 = 360067^2 + 186490^2 .

It is a cyclic number.

It is not a de Polignac number, because 164426764589 - 2²⁸ = 164158329133 is a prime.

It is a super-3 number, since 3×164426764589³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164426764529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82213382294 + 82213382295.

It is an arithmetic number, because the mean of its divisors is an integer number (82213382295).

Almost surely, 2^164426764589 is an apocalyptic number.

It is an amenable number.

164426764589 is a deficient number, since it is larger than the sum of its proper divisors (1).

164426764589 is an equidigital number, since it uses as much as digits as its factorization.

164426764589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69672960, while the sum is 62.

The spelling of 164426764589 in words is "one hundred sixty-four billion, four hundred twenty-six million, seven hundred sixty-four thousand, five hundred eighty-nine".