164145743 has 4 divisors (see below), whose sum is σ = 164869080. Its totient is φ = 163422408.

The previous prime is 164145703. The next prime is 164145763. The reversal of 164145743 is 347541461.

164145743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 164145743 - 2⁶ = 164145679 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 (164145703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361328 + ... + 361781.

It is an arithmetic number, because the mean of its divisors is an integer number (41217270).

Almost surely, 2^164145743 is an apocalyptic number.

164145743 is a deficient number, since it is larger than the sum of its proper divisors (723337).

164145743 is an equidigital number, since it uses as much as digits as its factorization.

164145743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723336.

The product of its digits is 40320, while the sum is 35.

The square root of 164145743 is about 12811.9375193606. The cubic root of 164145743 is about 547.5324645929.

The spelling of 164145743 in words is "one hundred sixty-four million, one hundred forty-five thousand, seven hundred forty-three".