3318020285 has 4 divisors (see below), whose sum is σ = 3981624348. Its totient is φ = 2654416224.

The previous prime is 3318020249. The next prime is 3318020287. The reversal of 3318020285 is 5820208133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5820208133 = 89 ⋅65395597.

It can be written as a sum of positive squares in 2 ways, for example, as 1904711449 + 1413308836 = 43643^2 + 37594^2 .

It is a cyclic number.

It is not a de Polignac number, because 3318020285 - 2⁶ = 3318020221 is a prime.

It is a super-2 number, since 2×3318020285² = 22018517223342962450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3318020287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331802024 + ... + 331802033.

It is an arithmetic number, because the mean of its divisors is an integer number (995406087).

Almost surely, 2^3318020285 is an apocalyptic number.

It is an amenable number.

3318020285 is a deficient number, since it is larger than the sum of its proper divisors (663604063).

3318020285 is an equidigital number, since it uses as much as digits as its factorization.

3318020285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663604062.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 3318020285 is about 57602.2593740905. The cubic root of 3318020285 is about 1491.5106048285.

The spelling of 3318020285 in words is "three billion, three hundred eighteen million, twenty thousand, two hundred eighty-five".