164389553 has 2 divisors, whose sum is σ = 164389554. Its totient is φ = 164389552.

The previous prime is 164389529. The next prime is 164389583. The reversal of 164389553 is 355983461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156925729 + 7463824 = 12527^2 + 2732^2 .

It is a cyclic number.

It is not a de Polignac number, because 164389553 - 2⁸ = 164389297 is a prime.

It is not a weakly prime, because it can be changed into another prime (164389513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82194776 + 82194777.

It is an arithmetic number, because the mean of its divisors is an integer number (82194777).

Almost surely, 2^164389553 is an apocalyptic number.

It is an amenable number.

164389553 is a deficient number, since it is larger than the sum of its proper divisors (1).

164389553 is an equidigital number, since it uses as much as digits as its factorization.

164389553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 164389553 is about 12821.4489430797. The cubic root of 164389553 is about 547.8034186208.

The spelling of 164389553 in words is "one hundred sixty-four million, three hundred eighty-nine thousand, five hundred fifty-three".