164205045 has 12 divisors (see below), whose sum is σ = 284622156. Its totient is φ = 87576000.

The previous prime is 164205029. The next prime is 164205079. The reversal of 164205045 is 540502461.

It can be written as a sum of positive squares in 2 ways, for example, as 18326961 + 145878084 = 4281^2 + 12078^2 .

It is not a de Polignac number, because 164205045 - 2⁴ = 164205029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1824456 + ... + 1824545.

It is an arithmetic number, because the mean of its divisors is an integer number (23718513).

Almost surely, 2^164205045 is an apocalyptic number.

164205045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164205045 is a deficient number, since it is larger than the sum of its proper divisors (120417111).

164205045 is a wasteful number, since it uses less digits than its factorization.

164205045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649012 (or 3649009 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 164205045 is about 12814.2516363618. The cubic root of 164205045 is about 547.5983935253.

It can be divided in two parts, 164 and 205045, that added together give a square (205209 = 453²).

The spelling of 164205045 in words is "one hundred sixty-four million, two hundred five thousand, forty-five".