164745973 has 8 divisors (see below), whose sum is σ = 188358848. Its totient is φ = 141152544.

The previous prime is 164745949. The next prime is 164745991. The reversal of 164745973 is 379547461.

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

It is a cyclic number.

It is not a de Polignac number, because 164745973 - 2⁹ = 164745461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164745173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29665 + ... + 34777.

It is an arithmetic number, because the mean of its divisors is an integer number (23544856).

Almost surely, 2^164745973 is an apocalyptic number.

It is an amenable number.

164745973 is a deficient number, since it is larger than the sum of its proper divisors (23612875).

164745973 is an equidigital number, since it uses as much as digits as its factorization.

164745973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9723.

The product of its digits is 635040, while the sum is 46.

The square root of 164745973 is about 12835.3407823867. The cubic root of 164745973 is about 548.1990381559.

The spelling of 164745973 in words is "one hundred sixty-four million, seven hundred forty-five thousand, nine hundred seventy-three".