838957081 has 2 divisors, whose sum is σ = 838957082. Its totient is φ = 838957080.

The previous prime is 838957073. The next prime is 838957121. The reversal of 838957081 is 180759838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567201856 + 271755225 = 23816^2 + 16485^2 .

It is a cyclic number.

It is not a de Polignac number, because 838957081 - 2³ = 838957073 is a prime.

It is a super-2 number, since 2×838957081² = 1407697967520081122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (838957051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419478540 + 419478541.

It is an arithmetic number, because the mean of its divisors is an integer number (419478541).

Almost surely, 2^838957081 is an apocalyptic number.

It is an amenable number.

838957081 is a deficient number, since it is larger than the sum of its proper divisors (1).

838957081 is an equidigital number, since it uses as much as digits as its factorization.

838957081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 838957081 is about 28964.7558422301. The cubic root of 838957081 is about 943.1481444490.

It can be divided in two parts, 83895 and 7081, that multiplied together give a palindrome (594060495).

The spelling of 838957081 in words is "eight hundred thirty-eight million, nine hundred fifty-seven thousand, eighty-one".