164772838 has 8 divisors (see below), whose sum is σ = 255682080. Its totient is φ = 79545480.

The previous prime is 164772827. The next prime is 164772841. The reversal of 164772838 is 838277461.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420398 + ... + 1420513.

It is an arithmetic number, because the mean of its divisors is an integer number (31960260).

Almost surely, 2^164772838 is an apocalyptic number.

164772838 is a deficient number, since it is larger than the sum of its proper divisors (90909242).

164772838 is a wasteful number, since it uses less digits than its factorization.

164772838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840942.

The product of its digits is 451584, while the sum is 46.

The square root of 164772838 is about 12836.3872643357. The cubic root of 164772838 is about 548.2288346692.

The spelling of 164772838 in words is "one hundred sixty-four million, seven hundred seventy-two thousand, eight hundred thirty-eight".