2646078018 has 16 divisors (see below), whose sum is σ = 5304791520. Its totient is φ = 879920096.

The previous prime is 2646077989. The next prime is 2646078089. The reversal of 2646078018 is 8108706462.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523755 + ... + 528782.

It is an arithmetic number, because the mean of its divisors is an integer number (331549470).

Almost surely, 2^2646078018 is an apocalyptic number.

2646078018 is an abundant number, since it is smaller than the sum of its proper divisors (2658713502).

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

2646078018 is a wasteful number, since it uses less digits than its factorization.

2646078018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052961.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 2646078018 is about 51440.0429432169. The cubic root of 2646078018 is about 1383.1444814756.

The spelling of 2646078018 in words is "two billion, six hundred forty-six million, seventy-eight thousand, eighteen".