164473445 has 32 divisors (see below), whose sum is σ = 211009536. Its totient is φ = 122875200.

The previous prime is 164473429. The next prime is 164473447. The reversal of 164473445 is 544374461.

It is not a de Polignac number, because 164473445 - 2⁴ = 164473429 is a prime.

It is a super-3 number, since 3×164473445³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164473399 and 164473408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164473447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779390 + ... + 779600.

It is an arithmetic number, because the mean of its divisors is an integer number (6594048).

Almost surely, 2^164473445 is an apocalyptic number.

It is an amenable number.

164473445 is a deficient number, since it is larger than the sum of its proper divisors (46536091).

164473445 is a wasteful number, since it uses less digits than its factorization.

164473445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its digits is 161280, while the sum is 38.

The square root of 164473445 is about 12824.7200749178. The cubic root of 164473445 is about 547.8965885906.

The spelling of 164473445 in words is "one hundred sixty-four million, four hundred seventy-three thousand, four hundred forty-five".