164374645 has 8 divisors (see below), whose sum is σ = 197415000. Its totient is φ = 131389440.

The previous prime is 164374631. The next prime is 164374663. The reversal of 164374645 is 546473461.

It can be written as a sum of positive squares in 4 ways, for example, as 44209201 + 120165444 = 6649^2 + 10962^2 .

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

It is not a de Polignac number, because 164374645 - 2¹³ = 164366453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164374598 and 164374607.

It is a congruent number.

It is an unprimeable number.

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, 6916 + ... + 19405.

It is an arithmetic number, because the mean of its divisors is an integer number (24676875).

Almost surely, 2^164374645 is an apocalyptic number.

It is an amenable number.

164374645 is a deficient number, since it is larger than the sum of its proper divisors (33040355).

164374645 is a wasteful number, since it uses less digits than its factorization.

164374645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27575.

The product of its digits is 241920, while the sum is 40.

The square root of 164374645 is about 12820.8675603486. The cubic root of 164374645 is about 547.7868585655.

The spelling of 164374645 in words is "one hundred sixty-four million, three hundred seventy-four thousand, six hundred forty-five".