164539741 has 2 divisors, whose sum is σ = 164539742. Its totient is φ = 164539740.

The previous prime is 164539693. The next prime is 164539747. The reversal of 164539741 is 147935461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115132900 + 49406841 = 10730^2 + 7029^2 .

It is a cyclic number.

It is not a de Polignac number, because 164539741 - 2¹⁵ = 164506973 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 164539694 and 164539703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164539747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82269870 + 82269871.

It is an arithmetic number, because the mean of its divisors is an integer number (82269871).

Almost surely, 2^164539741 is an apocalyptic number.

It is an amenable number.

164539741 is a deficient number, since it is larger than the sum of its proper divisors (1).

164539741 is an equidigital number, since it uses as much as digits as its factorization.

164539741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 164539741 is about 12827.3045103015. The cubic root of 164539741 is about 547.9701941361.

The spelling of 164539741 in words is "one hundred sixty-four million, five hundred thirty-nine thousand, seven hundred forty-one".