164154440 has 16 divisors (see below), whose sum is σ = 369347580. Its totient is φ = 65661760.

The previous prime is 164154439. The next prime is 164154451. The reversal of 164154440 is 44451461.

It can be written as a sum of positive squares in 2 ways, for example, as 154206724 + 9947716 = 12418^2 + 3154^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051891 + ... + 2051970.

Almost surely, 2^164154440 is an apocalyptic number.

164154440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164154440 is an abundant number, since it is smaller than the sum of its proper divisors (205193140).

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

164154440 is a wasteful number, since it uses less digits than its factorization.

164154440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103872 (or 4103868 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 164154440 is about 12812.2769248873. The cubic root of 164154440 is about 547.5421344664.

The spelling of 164154440 in words is "one hundred sixty-four million, one hundred fifty-four thousand, four hundred forty".