3318309918 has 48 divisors (see below), whose sum is σ = 8963750016. Its totient is φ = 861898320.

The previous prime is 3318309899. The next prime is 3318309923. The reversal of 3318309918 is 8199038133.

It is a happy number.

3318309918 is a `hidden beast` number, since 331 + 8 + 309 + 9 + 1 + 8 = 666.

It is a super-2 number, since 2×3318309918² = 22022361423794333448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1195696 + ... + 1198467.

It is an arithmetic number, because the mean of its divisors is an integer number (186744792).

Almost surely, 2^3318309918 is an apocalyptic number.

3318309918 is an abundant number, since it is smaller than the sum of its proper divisors (5645440098).

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

3318309918 is a wasteful number, since it uses less digits than its factorization.

3318309918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394189 (or 2394186 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 3318309918 is about 57604.7733959609. The cubic root of 3318309918 is about 1491.5540020036.

It can be divided in two parts, 3318 and 309918, that added together give a triangular number (313236 = T₇₉₁).

The spelling of 3318309918 in words is "three billion, three hundred eighteen million, three hundred nine thousand, nine hundred eighteen".