164642629 has 2 divisors, whose sum is σ = 164642630. Its totient is φ = 164642628.

The previous prime is 164642617. The next prime is 164642633. The reversal of 164642629 is 926246461.

It is a happy number.

164642629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158810404 + 5832225 = 12602^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 164642629 - 2⁹ = 164642117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 164642591 and 164642600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164642669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82321314 + 82321315.

It is an arithmetic number, because the mean of its divisors is an integer number (82321315).

Almost surely, 2^164642629 is an apocalyptic number.

It is an amenable number.

164642629 is a deficient number, since it is larger than the sum of its proper divisors (1).

164642629 is an equidigital number, since it uses as much as digits as its factorization.

164642629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 164642629 is about 12831.3143909734. The cubic root of 164642629 is about 548.0843870347.

The spelling of 164642629 in words is "one hundred sixty-four million, six hundred forty-two thousand, six hundred twenty-nine".