2918320128 has 72 divisors (see below), whose sum is σ = 8428697550. Its totient is φ = 972767232.

The previous prime is 2918320123. The next prime is 2918320169. The reversal of 2918320128 is 8210238192.

It can be written as a sum of positive squares in only one way, i.e., 1808630784 + 1109689344 = 42528^2 + 33312^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2918320092 and 2918320101.

It is not an unprimeable number, because it can be changed into a prime (2918320121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60733 + ... + 97596.

Almost surely, 2^2918320128 is an apocalyptic number.

It is an amenable number.

2918320128 is an abundant number, since it is smaller than the sum of its proper divisors (5510377422).

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

2918320128 is a wasteful number, since it uses less digits than its factorization.

2918320128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158357 (or 158334 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2918320128 is about 54021.4783951717. The cubic root of 2918320128 is about 1429.0397530747.

The spelling of 2918320128 in words is "two billion, nine hundred eighteen million, three hundred twenty thousand, one hundred twenty-eight".