2145928018 has 8 divisors (see below), whose sum is σ = 3466499148. Its totient is φ = 990428304.

The previous prime is 2145928007. The next prime is 2145928027. The reversal of 2145928018 is 8108295412.

It can be written as a sum of positive squares in 2 ways, for example, as 1822179969 + 323748049 = 42687^2 + 17993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41267821 + ... + 41267872.

Almost surely, 2^2145928018 is an apocalyptic number.

2145928018 is a deficient number, since it is larger than the sum of its proper divisors (1320571130).

2145928018 is a wasteful number, since it uses less digits than its factorization.

2145928018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82535708.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 2145928018 is about 46324.1623561614. The cubic root of 2145928018 is about 1289.8475508407.

The spelling of 2145928018 in words is "two billion, one hundred forty-five million, nine hundred twenty-eight thousand, eighteen".