2891813116 has 6 divisors (see below), whose sum is σ = 5060672960. Its totient is φ = 1445906556.

The previous prime is 2891813059. The next prime is 2891813117. The reversal of 2891813116 is 6113181982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891813117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361476636 + ... + 361476643.

Almost surely, 2^2891813116 is an apocalyptic number.

It is an amenable number.

2891813116 is a deficient number, since it is larger than the sum of its proper divisors (2168859844).

2891813116 is a wasteful number, since it uses less digits than its factorization.

2891813116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722953283 (or 722953281 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 2891813116 is about 53775.5810382370. The cubic root of 2891813116 is about 1424.6999456058.

The spelling of 2891813116 in words is "two billion, eight hundred ninety-one million, eight hundred thirteen thousand, one hundred sixteen".