2018545 has 8 divisors (see below), whose sum is σ = 2505960. Its totient is φ = 1559040.

The previous prime is 2018543. The next prime is 2018561. The reversal of 2018545 is 5458102.

It can be written as a sum of positive squares in 4 ways, for example, as 278784 + 1739761 = 528^2 + 1319^2 .

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

It is not a de Polignac number, because 2018545 - 2¹ = 2018543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2018543) by changing a digit.

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, 6816 + ... + 7105.

It is an arithmetic number, because the mean of its divisors is an integer number (313245).

2^2018545 is an apocalyptic number.

It is an amenable number.

2018545 is a deficient number, since it is larger than the sum of its proper divisors (487415).

2018545 is a wasteful number, since it uses less digits than its factorization.

2018545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13955.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2018545 is about 1420.7550809341. The cubic root of 2018545 is about 126.3803281155.

The spelling of 2018545 in words is "two million, eighteen thousand, five hundred forty-five".