2188749348 has 18 divisors (see below), whose sum is σ = 5532672054. Its totient is φ = 729583104.

The previous prime is 2188749341. The next prime is 2188749349. The reversal of 2188749348 is 8439478812.

It is a happy number.

2188749348 is a `hidden beast` number, since 218 + 87 + 4 + 9 + 348 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2138877504 + 49871844 = 46248^2 + 7062^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 2188749294 and 2188749303.

It is not an unprimeable number, because it can be changed into a prime (2188749341) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 30399261 + ... + 30399332.

Almost surely, 2^2188749348 is an apocalyptic number.

It is an amenable number.

2188749348 is an abundant number, since it is smaller than the sum of its proper divisors (3343922706).

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

2188749348 is a wasteful number, since it uses less digits than its factorization.

2188749348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60798603 (or 60798598 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 2188749348 is about 46784.0715201232. The cubic root of 2188749348 is about 1298.3706110816.

The spelling of 2188749348 in words is "two billion, one hundred eighty-eight million, seven hundred forty-nine thousand, three hundred forty-eight".