4018205420 has 48 divisors (see below), whose sum is σ = 8652758688. Its totient is φ = 1566888960.

The previous prime is 4018205371. The next prime is 4018205423. The reversal of 4018205420 is 245028104.

It is a happy number.

It is a super-2 number, since 2×4018205420² = 32291949594634752800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4018205420.

It is not an unprimeable number, because it can be changed into a prime (4018205423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123287 + ... + 152433.

It is an arithmetic number, because the mean of its divisors is an integer number (180265806).

Almost surely, 2^4018205420 is an apocalyptic number.

It is an amenable number.

4018205420 is an abundant number, since it is smaller than the sum of its proper divisors (4634553268).

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

4018205420 is a wasteful number, since it uses less digits than its factorization.

4018205420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29330 (or 29328 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 4018205420 is about 63389.3162922586. The cubic root of 4018205420 is about 1589.8056827784.

The spelling of 4018205420 in words is "four billion, eighteen million, two hundred five thousand, four hundred twenty".