164260389 has 8 divisors (see below), whose sum is σ = 219121920. Its totient is φ = 109452896.

The previous prime is 164260381. The next prime is 164260399. The reversal of 164260389 is 983062461.

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

It is a cyclic number.

It is not a de Polignac number, because 164260389 - 2³ = 164260381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164260381) 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, 5784 + ... + 19025.

It is an arithmetic number, because the mean of its divisors is an integer number (27390240).

Almost surely, 2^164260389 is an apocalyptic number.

It is an amenable number.

164260389 is a deficient number, since it is larger than the sum of its proper divisors (54861531).

164260389 is a wasteful number, since it uses less digits than its factorization.

164260389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27019.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 164260389 is about 12816.4109250601. The cubic root of 164260389 is about 547.6599078377.

The spelling of 164260389 in words is "one hundred sixty-four million, two hundred sixty thousand, three hundred eighty-nine".