2666948818 has 8 divisors (see below), whose sum is σ = 4001209740. Its totient is φ = 1333212240.

The previous prime is 2666948807. The next prime is 2666948839. The reversal of 2666948818 is 8188496662.

It can be written as a sum of positive squares in 2 ways, for example, as 2664314689 + 2634129 = 51617^2 + 1623^2 .

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

It is a super-2 number, since 2×2666948818² = 14225231995663194248, which contains 22 as substring.

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, 118113 + ... + 138868.

Almost surely, 2^2666948818 is an apocalyptic number.

2666948818 is a deficient number, since it is larger than the sum of its proper divisors (1334260922).

2666948818 is a wasteful number, since it uses less digits than its factorization.

2666948818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262172.

The product of its digits is 7962624, while the sum is 58.

The square root of 2666948818 is about 51642.5097957100. The cubic root of 2666948818 is about 1386.7714551784.

The spelling of 2666948818 in words is "two billion, six hundred sixty-six million, nine hundred forty-eight thousand, eight hundred eighteen".