2128538018 has 8 divisors (see below), whose sum is σ = 3194999760. Its totient is φ = 1063538100.

The previous prime is 2128537979. The next prime is 2128538051. The reversal of 2128538018 is 8108358212.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361808 + ... + 367643.

It is an arithmetic number, because the mean of its divisors is an integer number (399374970).

Almost surely, 2^2128538018 is an apocalyptic number.

2128538018 is a deficient number, since it is larger than the sum of its proper divisors (1066461742).

2128538018 is a wasteful number, since it uses less digits than its factorization.

2128538018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730912.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 2128538018 is about 46136.0815197823. The cubic root of 2128538018 is about 1286.3539087722.

The spelling of 2128538018 in words is "two billion, one hundred twenty-eight million, five hundred thirty-eight thousand, eighteen".