164865049 has 8 divisors (see below), whose sum is σ = 168577920. Its totient is φ = 161160816.

The previous prime is 164865047. The next prime is 164865089. The reversal of 164865049 is 940568461.

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 164865049 - 2¹ = 164865047 is a prime.

It is a super-3 number, since 3×164865049³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164864996 and 164865014.

It is not an unprimeable number, because it can be changed into a prime (164865047) 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, 50542 + ... + 53704.

It is an arithmetic number, because the mean of its divisors is an integer number (21072240).

Almost surely, 2^164865049 is an apocalyptic number.

It is an amenable number.

164865049 is a deficient number, since it is larger than the sum of its proper divisors (3712871).

164865049 is a wasteful number, since it uses less digits than its factorization.

164865049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 164865049 is about 12839.9785435958. The cubic root of 164865049 is about 548.3310831191.

The spelling of 164865049 in words is "one hundred sixty-four million, eight hundred sixty-five thousand, forty-nine".