2991066818 has 16 divisors (see below), whose sum is σ = 4502796480. Its totient is φ = 1490144976.

The previous prime is 2991066797. The next prime is 2991066821. The reversal of 2991066818 is 8186601992.

It is a happy 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, 772355 + ... + 776217.

It is an arithmetic number, because the mean of its divisors is an integer number (281424780).

Almost surely, 2^2991066818 is an apocalyptic number.

2991066818 is a deficient number, since it is larger than the sum of its proper divisors (1511729662).

2991066818 is a wasteful number, since it uses less digits than its factorization.

2991066818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 2991066818 is about 54690.6465311940. The cubic root of 2991066818 is about 1440.8166050492.

The spelling of 2991066818 in words is "two billion, nine hundred ninety-one million, sixty-six thousand, eight hundred eighteen".