164436438 has 16 divisors (see below), whose sum is σ = 340213680. Its totient is φ = 52922016.

The previous prime is 164436421. The next prime is 164436439. The reversal of 164436438 is 834634461.

It is a happy number.

It is a super-3 number, since 3×164436438³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164436396 and 164436405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164436439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472345 + ... + 472692.

It is an arithmetic number, because the mean of its divisors is an integer number (21263355).

Almost surely, 2^164436438 is an apocalyptic number.

164436438 is an abundant number, since it is smaller than the sum of its proper divisors (175777242).

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

164436438 is a wasteful number, since it uses less digits than its factorization.

164436438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945071.

The product of its digits is 165888, while the sum is 39.

The square root of 164436438 is about 12823.2771942277. The cubic root of 164436438 is about 547.8554927367.

The spelling of 164436438 in words is "one hundred sixty-four million, four hundred thirty-six thousand, four hundred thirty-eight".