868049137 has 2 divisors, whose sum is σ = 868049138. Its totient is φ = 868049136.

The previous prime is 868049081. The next prime is 868049153. The reversal of 868049137 is 731940868.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520934976 + 347114161 = 22824^2 + 18631^2 .

It is a cyclic number.

It is not a de Polignac number, because 868049137 - 2⁷ = 868049009 is a prime.

It is not a weakly prime, because it can be changed into another prime (868049167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434024568 + 434024569.

It is an arithmetic number, because the mean of its divisors is an integer number (434024569).

Almost surely, 2^868049137 is an apocalyptic number.

It is an amenable number.

868049137 is a deficient number, since it is larger than the sum of its proper divisors (1).

868049137 is an equidigital number, since it uses as much as digits as its factorization.

868049137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 868049137 is about 29462.6736227383. The cubic root of 868049137 is about 953.9261842835.

The spelling of 868049137 in words is "eight hundred sixty-eight million, forty-nine thousand, one hundred thirty-seven".