2168208016 has 40 divisors (see below), whose sum is σ = 4790177784. Its totient is φ = 941844480.

The previous prime is 2168208013. The next prime is 2168208019. The reversal of 2168208016 is 6108028612.

It is an interprime number because it is at equal distance from previous prime (2168208013) and next prime (2168208019).

It can be written as a sum of positive squares in 4 ways, for example, as 7817616 + 2160390400 = 2796^2 + 46480^2 .

It is a super-2 number, since 2×2168208016² = 9402252001293312512, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (2168208013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303055 + ... + 310126.

Almost surely, 2^2168208016 is an apocalyptic number.

2168208016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2168208016 is an abundant number, since it is smaller than the sum of its proper divisors (2621969768).

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

2168208016 is a wasteful number, since it uses less digits than its factorization.

2168208016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613219 (or 613213 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 2168208016 is about 46564.0206167809. The cubic root of 2168208016 is about 1294.2961179322.

The spelling of 2168208016 in words is "two billion, one hundred sixty-eight million, two hundred eight thousand, sixteen".