2891063396 has 18 divisors (see below), whose sum is σ = 5478480882. Its totient is φ = 1334336640.

The previous prime is 2891063393. The next prime is 2891063411. The reversal of 2891063396 is 6933601982.

It can be written as a sum of positive squares in 3 ways, for example, as 196000000 + 2695063396 = 14000^2 + 51914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2891063396.

It is not an unprimeable number, because it can be changed into a prime (2891063393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2137685 + ... + 2139036.

It is an arithmetic number, because the mean of its divisors is an integer number (304360049).

Almost surely, 2^2891063396 is an apocalyptic number.

2891063396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2891063396 is a deficient number, since it is larger than the sum of its proper divisors (2587417486).

2891063396 is a wasteful number, since it uses less digits than its factorization.

2891063396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276751 (or 4276736 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 2891063396 is about 53768.6097644341. The cubic root of 2891063396 is about 1424.5768142784.

The spelling of 2891063396 in words is "two billion, eight hundred ninety-one million, sixty-three thousand, three hundred ninety-six".