2685418847 has 2 divisors, whose sum is σ = 2685418848. Its totient is φ = 2685418846.

The previous prime is 2685418831. The next prime is 2685418849. The reversal of 2685418847 is 7488145862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2685418847 - 2⁴ = 2685418831 is a prime.

It is a super-2 number, since 2×2685418847² = 14422948767645618818, which contains 22 as substring.

Together with 2685418849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685418849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342709423 + 1342709424.

It is an arithmetic number, because the mean of its divisors is an integer number (1342709424).

Almost surely, 2^2685418847 is an apocalyptic number.

2685418847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685418847 is an equidigital number, since it uses as much as digits as its factorization.

2685418847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3440640, while the sum is 53.

The square root of 2685418847 is about 51821.0270739591. The cubic root of 2685418847 is about 1389.9654679757.

The spelling of 2685418847 in words is "two billion, six hundred eighty-five million, four hundred eighteen thousand, eight hundred forty-seven".