164104638 has 32 divisors (see below), whose sum is σ = 358732800. Its totient is φ = 49822080.

The previous prime is 164104631. The next prime is 164104679. The reversal of 164104638 is 836401461.

It is a super-2 number, since 2×164104638² = 53860664426222088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164104599 and 164104608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164104631) 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 15 ways as a sum of consecutive naturals, for example, 22788 + ... + 29111.

It is an arithmetic number, because the mean of its divisors is an integer number (11210400).

Almost surely, 2^164104638 is an apocalyptic number.

164104638 is an abundant number, since it is smaller than the sum of its proper divisors (194628162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164104638 is a wasteful number, since it uses less digits than its factorization.

164104638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51952.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 164104638 is about 12810.3332509346. Note that the first 3 decimals coincide. The cubic root of 164104638 is about 547.4867568365.

The spelling of 164104638 in words is "one hundred sixty-four million, one hundred four thousand, six hundred thirty-eight".