838761633769 has 2 divisors, whose sum is σ = 838761633770. Its totient is φ = 838761633768.

The previous prime is 838761633571. The next prime is 838761633803. The reversal of 838761633769 is 967336167838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559990305625 + 278771328144 = 748325^2 + 527988^2 .

It is a cyclic number.

It is not a de Polignac number, because 838761633769 - 2²⁹ = 838224762857 is a prime.

It is a super-2 number, since 2×838761633769² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (838761631769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419380816884 + 419380816885.

It is an arithmetic number, because the mean of its divisors is an integer number (419380816885).

Almost surely, 2^838761633769 is an apocalyptic number.

It is an amenable number.

838761633769 is a deficient number, since it is larger than the sum of its proper divisors (1).

838761633769 is an equidigital number, since it uses as much as digits as its factorization.

838761633769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164602368, while the sum is 67.

The spelling of 838761633769 in words is "eight hundred thirty-eight billion, seven hundred sixty-one million, six hundred thirty-three thousand, seven hundred sixty-nine".