2188078480 has 40 divisors (see below), whose sum is σ = 5814038592. Its totient is φ = 750198144.

The previous prime is 2188078469. The next prime is 2188078489. The reversal of 2188078480 is 848708812.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2188078480² = 9575374869278220800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2188078480.

It is not an unprimeable number, because it can be changed into a prime (2188078489) 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, 1953082 + ... + 1954201.

Almost surely, 2^2188078480 is an apocalyptic number.

2188078480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2188078480 is an abundant number, since it is smaller than the sum of its proper divisors (3625960112).

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

2188078480 is a wasteful number, since it uses less digits than its factorization.

2188078480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907303 (or 3907297 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 46.

The square root of 2188078480 is about 46776.9011372066. The cubic root of 2188078480 is about 1298.2379441008.

The spelling of 2188078480 in words is "two billion, one hundred eighty-eight million, seventy-eight thousand, four hundred eighty".