2891346686 has 16 divisors (see below), whose sum is σ = 4417849680. Its totient is φ = 1418834880.

The previous prime is 2891346673. The next prime is 2891346701. The reversal of 2891346686 is 6866431982.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29825 + ... + 81683.

It is an arithmetic number, because the mean of its divisors is an integer number (276115605).

Almost surely, 2^2891346686 is an apocalyptic number.

2891346686 is a deficient number, since it is larger than the sum of its proper divisors (1526502994).

2891346686 is a wasteful number, since it uses less digits than its factorization.

2891346686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52379.

The product of its digits is 2985984, while the sum is 53.

The square root of 2891346686 is about 53771.2440436336. The cubic root of 2891346686 is about 1424.6233433152.

The spelling of 2891346686 in words is "two billion, eight hundred ninety-one million, three hundred forty-six thousand, six hundred eighty-six".