4521018 has 24 divisors (see below), whose sum is σ = 9487584. Its totient is φ = 1433520.

The previous prime is 4521001. The next prime is 4521037. The reversal of 4521018 is 8101254.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4520985 and 4521003.

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, 24888 + ... + 25068.

It is an arithmetic number, because the mean of its divisors is an integer number (395316).

Almost surely, 2^4521018 is an apocalyptic number.

4521018 is an abundant number, since it is smaller than the sum of its proper divisors (4966566).

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

4521018 is a wasteful number, since it uses less digits than its factorization.

4521018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 4521018 is about 2126.2685625292. The cubic root of 4521018 is about 165.3529999946.

The spelling of 4521018 in words is "four million, five hundred twenty-one thousand, eighteen".