2616894991 has 2 divisors, whose sum is σ = 2616894992. Its totient is φ = 2616894990.

The previous prime is 2616894971. The next prime is 2616895049. The reversal of 2616894991 is 1994986162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2616894991 - 2⁹ = 2616894479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2616894901) by changing a digit.

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 as a sum of consecutive naturals, namely, 1308447495 + 1308447496.

It is an arithmetic number, because the mean of its divisors is an integer number (1308447496).

Almost surely, 2^2616894991 is an apocalyptic number.

2616894991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616894991 is an equidigital number, since it uses as much as digits as its factorization.

2616894991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 55.

The square root of 2616894991 is about 51155.5958913587. The cubic root of 2616894991 is about 1378.0408717426.

The spelling of 2616894991 in words is "two billion, six hundred sixteen million, eight hundred ninety-four thousand, nine hundred ninety-one".