164919818 has 8 divisors (see below), whose sum is σ = 282719712. Its totient is φ = 70679916.

The previous prime is 164919803. The next prime is 164919827. The reversal of 164919818 is 818919461.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5889980 + ... + 5890007.

It is an arithmetic number, because the mean of its divisors is an integer number (35339964).

Almost surely, 2^164919818 is an apocalyptic number.

164919818 is a deficient number, since it is larger than the sum of its proper divisors (117799894).

164919818 is a wasteful number, since it uses less digits than its factorization.

164919818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11779996.

The product of its digits is 124416, while the sum is 47.

The square root of 164919818 is about 12842.1111192825. Note that the first 5 decimals coincide. The cubic root of 164919818 is about 548.3917958461.

The spelling of 164919818 in words is "one hundred sixty-four million, nine hundred nineteen thousand, eight hundred eighteen".