164038489 has 2 divisors, whose sum is σ = 164038490. Its totient is φ = 164038488.

The previous prime is 164038477. The next prime is 164038493. The reversal of 164038489 is 984830461.

164038489 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., 163635264 + 403225 = 12792^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 164038489 - 2⁷ = 164038361 is a prime.

It is not a weakly prime, because it can be changed into another prime (164038409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82019244 + 82019245.

It is an arithmetic number, because the mean of its divisors is an integer number (82019245).

Almost surely, 2^164038489 is an apocalyptic number.

It is an amenable number.

164038489 is a deficient number, since it is larger than the sum of its proper divisors (1).

164038489 is an equidigital number, since it uses as much as digits as its factorization.

164038489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 164038489 is about 12807.7511296871. The cubic root of 164038489 is about 547.4131847363.

The spelling of 164038489 in words is "one hundred sixty-four million, thirty-eight thousand, four hundred eighty-nine".