2949846857 has 2 divisors, whose sum is σ = 2949846858. Its totient is φ = 2949846856.

The previous prime is 2949846833. The next prime is 2949846859. The reversal of 2949846857 is 7586489492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2845582336 + 104264521 = 53344^2 + 10211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2949846857 - 2¹² = 2949842761 is a prime.

Together with 2949846859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2949846857.

It is not a weakly prime, because it can be changed into another prime (2949846859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1474923428 + 1474923429.

It is an arithmetic number, because the mean of its divisors is an integer number (1474923429).

Almost surely, 2^2949846857 is an apocalyptic number.

It is an amenable number.

2949846857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2949846857 is an equidigital number, since it uses as much as digits as its factorization.

2949846857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 62.

The square root of 2949846857 is about 54312.4926421169. The cubic root of 2949846857 is about 1434.1673239055.

The spelling of 2949846857 in words is "two billion, nine hundred forty-nine million, eight hundred forty-six thousand, eight hundred fifty-seven".