164945803 has 8 divisors (see below), whose sum is σ = 180066096. Its totient is φ = 149846400.

The previous prime is 164945797. The next prime is 164945813. The reversal of 164945803 is 308549461.

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

It is not a de Polignac number, because 164945803 - 2²⁵ = 131391371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164945813) 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 in 7 ways as a sum of consecutive naturals, for example, 14575 + ... + 23287.

It is an arithmetic number, because the mean of its divisors is an integer number (22508262).

Almost surely, 2^164945803 is an apocalyptic number.

164945803 is a deficient number, since it is larger than the sum of its proper divisors (15120293).

164945803 is a wasteful number, since it uses less digits than its factorization.

164945803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10445.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 164945803 is about 12843.1227900383. The cubic root of 164945803 is about 548.4205961295.

The spelling of 164945803 in words is "one hundred sixty-four million, nine hundred forty-five thousand, eight hundred three".