616196491 has 2 divisors, whose sum is σ = 616196492. Its totient is φ = 616196490.

The previous prime is 616196489. The next prime is 616196677. The reversal of 616196491 is 194691616.

616196491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616196491 - 2¹ = 616196489 is a prime.

Together with 616196489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (616196411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308098245 + 308098246.

It is an arithmetic number, because the mean of its divisors is an integer number (308098246).

Almost surely, 2^616196491 is an apocalyptic number.

616196491 is a deficient number, since it is larger than the sum of its proper divisors (1).

616196491 is an equidigital number, since it uses as much as digits as its factorization.

616196491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 616196491 is about 24823.3054003692. The cubic root of 616196491 is about 850.9546326437.

The spelling of 616196491 in words is "six hundred sixteen million, one hundred ninety-six thousand, four hundred ninety-one".