164954321 has 16 divisors (see below), whose sum is σ = 201298944. Its totient is φ = 132091344.

The previous prime is 164954287. The next prime is 164954327. The reversal of 164954321 is 123459461.

It is a de Polignac number, because none of the positive numbers 2^k-164954321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164954327) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4991 + ... + 18836.

It is an arithmetic number, because the mean of its divisors is an integer number (12581184).

Almost surely, 2^164954321 is an apocalyptic number.

It is an amenable number.

164954321 is a deficient number, since it is larger than the sum of its proper divisors (36344623).

164954321 is a wasteful number, since it uses less digits than its factorization.

164954321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23900.

The product of its digits is 25920, while the sum is 35.

The square root of 164954321 is about 12843.4544029245. The cubic root of 164954321 is about 548.4300363337.

The spelling of 164954321 in words is "one hundred sixty-four million, nine hundred fifty-four thousand, three hundred twenty-one".