2188481760 has 96 divisors (see below), whose sum is σ = 7659701280. Its totient is φ = 583593984.

The previous prime is 2188481759. The next prime is 2188481761. The reversal of 2188481760 is 671848812.

2188481760 is a `hidden beast` number, since 21 + 88 + 481 + 76 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2188481759) and next prime (2188481761).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188481761) 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, 248977 + ... + 257616.

It is an arithmetic number, because the mean of its divisors is an integer number (79788555).

Almost surely, 2^2188481760 is an apocalyptic number.

2188481760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2188481760 is an abundant number, since it is smaller than the sum of its proper divisors (5471219520).

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

2188481760 is a wasteful number, since it uses less digits than its factorization.

2188481760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506617 (or 506603 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 2188481760 is about 46781.2116132107. The cubic root of 2188481760 is about 1298.3176976747.

The spelling of 2188481760 in words is "two billion, one hundred eighty-eight million, four hundred eighty-one thousand, seven hundred sixty".