849689542937 has 2 divisors, whose sum is σ = 849689542938. Its totient is φ = 849689542936.

The previous prime is 849689542903. The next prime is 849689542939. The reversal of 849689542937 is 739245986948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817440207376 + 32249335561 = 904124^2 + 179581^2 .

It is a cyclic number.

It is not a de Polignac number, because 849689542937 - 2¹⁸ = 849689280793 is a prime.

Together with 849689542939, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (849689542939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424844771468 + 424844771469.

It is an arithmetic number, because the mean of its divisors is an integer number (424844771469).

Almost surely, 2^849689542937 is an apocalyptic number.

It is an amenable number.

849689542937 is a deficient number, since it is larger than the sum of its proper divisors (1).

849689542937 is an equidigital number, since it uses as much as digits as its factorization.

849689542937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940584960, while the sum is 74.

The spelling of 849689542937 in words is "eight hundred forty-nine billion, six hundred eighty-nine million, five hundred forty-two thousand, nine hundred thirty-seven".