2168618672 has 40 divisors (see below), whose sum is σ = 4629092112. Its totient is φ = 975968000.

The previous prime is 2168618633. The next prime is 2168618689. The reversal of 2168618672 is 2768168612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43223 + ... + 78774.

Almost surely, 2^2168618672 is an apocalyptic number.

2168618672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2168618672 is an abundant number, since it is smaller than the sum of its proper divisors (2460473440).

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

2168618672 is a wasteful number, since it uses less digits than its factorization.

2168618672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122117 (or 122111 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 2168618672 is about 46568.4299928610. The cubic root of 2168618672 is about 1294.3778254852.

The spelling of 2168618672 in words is "two billion, one hundred sixty-eight million, six hundred eighteen thousand, six hundred seventy-two".