4500018 has 36 divisors (see below), whose sum is σ = 10049130. Its totient is φ = 1455168.

The previous prime is 4500007. The next prime is 4500029. The reversal of 4500018 is 8100054.

It is an interprime number because it is at equal distance from previous prime (4500007) and next prime (4500029).

It can be written as a sum of positive squares in 3 ways, for example, as 4028049 + 471969 = 2007^2 + 687^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50518 + ... + 50606.

Almost surely, 2^4500018 is an apocalyptic number.

4500018 is an abundant number, since it is smaller than the sum of its proper divisors (5549112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4500018 is a wasteful number, since it uses less digits than its factorization.

4500018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 4500018 is about 2121.3245861961. The cubic root of 4500018 is about 165.0965825729.

It can be divided in two parts, 45000 and 18, that multiplied together give a 4-th power (810000 = 30⁴).

The spelling of 4500018 in words is "four million, five hundred thousand, eighteen".