164808438 has 32 divisors (see below), whose sum is σ = 357527520. Its totient is φ = 50442240.

The previous prime is 164808437. The next prime is 164808439. The reversal of 164808438 is 834808461.

It is an interprime number because it is at equal distance from previous prime (164808437) and next prime (164808439).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164808438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164808433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15523 + ... + 23886.

It is an arithmetic number, because the mean of its divisors is an integer number (11172735).

Almost surely, 2^164808438 is an apocalyptic number.

164808438 is an abundant number, since it is smaller than the sum of its proper divisors (192719082).

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

164808438 is a wasteful number, since it uses less digits than its factorization.

164808438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39472.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 164808438 is about 12837.7738724438. The cubic root of 164808438 is about 548.2683143580.

The spelling of 164808438 in words is "one hundred sixty-four million, eight hundred eight thousand, four hundred thirty-eight".