164953923 has 4 divisors (see below), whose sum is σ = 219938568. Its totient is φ = 109969280.

The previous prime is 164953889. The next prime is 164953927. The reversal of 164953923 is 329359461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164953923 - 2¹⁷ = 164822851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164953927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27492318 + ... + 27492323.

It is an arithmetic number, because the mean of its divisors is an integer number (54984642).

Almost surely, 2^164953923 is an apocalyptic number.

164953923 is a deficient number, since it is larger than the sum of its proper divisors (54984645).

164953923 is an equidigital number, since it uses as much as digits as its factorization.

164953923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54984644.

The product of its digits is 174960, while the sum is 42.

The square root of 164953923 is about 12843.4389086413. The cubic root of 164953923 is about 548.4295952514.

The spelling of 164953923 in words is "one hundred sixty-four million, nine hundred fifty-three thousand, nine hundred twenty-three".