2218918968 has 64 divisors (see below), whose sum is σ = 7044192000. Its totient is φ = 633976416.

The previous prime is 2218918967. The next prime is 2218918969. The reversal of 2218918968 is 8698198122.

It is an interprime number because it is at equal distance from previous prime (2218918967) and next prime (2218918969).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218918967) 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, 732258 + ... + 735281.

It is an arithmetic number, because the mean of its divisors is an integer number (110065500).

Almost surely, 2^2218918968 is an apocalyptic number.

2218918968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2218918968 is an abundant number, since it is smaller than the sum of its proper divisors (4825273032).

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

2218918968 is a wasteful number, since it uses less digits than its factorization.

2218918968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467561 (or 1467551 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 2218918968 is about 47105.4027474556. The cubic root of 2218918968 is about 1304.3089695938.

The spelling of 2218918968 in words is "two billion, two hundred eighteen million, nine hundred eighteen thousand, nine hundred sixty-eight".