166053923 has 8 divisors (see below), whose sum is σ = 190279680. Its totient is φ = 141954120.

The previous prime is 166053911. The next prime is 166053931. The reversal of 166053923 is 329350661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166053923 - 2¹⁸ = 165791779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166053983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28643 + ... + 33948.

It is an arithmetic number, because the mean of its divisors is an integer number (23784960).

Almost surely, 2^166053923 is an apocalyptic number.

166053923 is a deficient number, since it is larger than the sum of its proper divisors (24225757).

166053923 is an equidigital number, since it uses as much as digits as its factorization.

166053923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62977.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 166053923 is about 12886.1911750525. The cubic root of 166053923 is about 549.6459683041.

The spelling of 166053923 in words is "one hundred sixty-six million, fifty-three thousand, nine hundred twenty-three".