164886545 has 4 divisors (see below), whose sum is σ = 197863860. Its totient is φ = 131909232.

The previous prime is 164886497. The next prime is 164886571. The reversal of 164886545 is 545688461.

164886545 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, and also an emirpimes, since its reverse is a distinct semiprime: 545688461 = 8887 ⋅61403.

It can be written as a sum of positive squares in 2 ways, for example, as 95863681 + 69022864 = 9791^2 + 8308^2 .

It is a cyclic number.

It is not a de Polignac number, because 164886545 - 2¹⁸ = 164624401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164886545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16488650 + ... + 16488659.

It is an arithmetic number, because the mean of its divisors is an integer number (49465965).

Almost surely, 2^164886545 is an apocalyptic number.

It is an amenable number.

164886545 is a deficient number, since it is larger than the sum of its proper divisors (32977315).

164886545 is an equidigital number, since it uses as much as digits as its factorization.

164886545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32977314.

The product of its digits is 921600, while the sum is 47.

The square root of 164886545 is about 12840.8155893619. The cubic root of 164886545 is about 548.3549135444.

The spelling of 164886545 in words is "one hundred sixty-four million, eight hundred eighty-six thousand, five hundred forty-five".