164238539 has 8 divisors (see below), whose sum is σ = 170034240. Its totient is φ = 158538816.

The previous prime is 164238533. The next prime is 164238541. The reversal of 164238539 is 935832461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164238539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164238496 and 164238505.

It is not an unprimeable number, because it can be changed into a prime (164238533) 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 in 7 ways as a sum of consecutive naturals, for example, 20504 + ... + 27365.

It is an arithmetic number, because the mean of its divisors is an integer number (21254280).

Almost surely, 2^164238539 is an apocalyptic number.

164238539 is a deficient number, since it is larger than the sum of its proper divisors (5795701).

164238539 is an equidigital number, since it uses as much as digits as its factorization.

164238539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47989.

The product of its digits is 155520, while the sum is 41.

The square root of 164238539 is about 12815.5584739800. The cubic root of 164238539 is about 547.6356234283.

The spelling of 164238539 in words is "one hundred sixty-four million, two hundred thirty-eight thousand, five hundred thirty-nine".