164579445 has 40 divisors (see below), whose sum is σ = 296382240. Its totient is φ = 87372000.

The previous prime is 164579419. The next prime is 164579473. The reversal of 164579445 is 544975461.

It is not a de Polignac number, because 164579445 - 2¹² = 164575349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 164579445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 100846 + ... + 102464.

It is an arithmetic number, because the mean of its divisors is an integer number (7409556).

Almost surely, 2^164579445 is an apocalyptic number.

164579445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164579445 is a deficient number, since it is larger than the sum of its proper divisors (131802795).

164579445 is a wasteful number, since it uses less digits than its factorization.

164579445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887 (or 1878 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 164579445 is about 12828.8520530872. The cubic root of 164579445 is about 548.0142662828.

The spelling of 164579445 in words is "one hundred sixty-four million, five hundred seventy-nine thousand, four hundred forty-five".