838767390457 has 2 divisors, whose sum is σ = 838767390458. Its totient is φ = 838767390456.

The previous prime is 838767390431. The next prime is 838767390463. The reversal of 838767390457 is 754093767838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 713747866896 + 125019523561 = 844836^2 + 353581^2 .

It is a cyclic number.

It is not a de Polignac number, because 838767390457 - 2³¹ = 836619906809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838767390392 and 838767390401.

It is not a weakly prime, because it can be changed into another prime (838767390467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419383695228 + 419383695229.

It is an arithmetic number, because the mean of its divisors is an integer number (419383695229).

Almost surely, 2^838767390457 is an apocalyptic number.

It is an amenable number.

838767390457 is a deficient number, since it is larger than the sum of its proper divisors (1).

838767390457 is an equidigital number, since it uses as much as digits as its factorization.

838767390457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 213373440, while the sum is 67.

The spelling of 838767390457 in words is "eight hundred thirty-eight billion, seven hundred sixty-seven million, three hundred ninety thousand, four hundred fifty-seven".