1382867257 has 2 divisors, whose sum is σ = 1382867258. Its totient is φ = 1382867256.

The previous prime is 1382867243. The next prime is 1382867273. The reversal of 1382867257 is 7527682831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960318121 + 422549136 = 30989^2 + 20556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1382867257 - 2²⁷ = 1248649529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1382867257.

It is not a weakly prime, because it can be changed into another prime (1382867207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691433628 + 691433629.

It is an arithmetic number, because the mean of its divisors is an integer number (691433629).

Almost surely, 2^1382867257 is an apocalyptic number.

It is an amenable number.

1382867257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382867257 is an equidigital number, since it uses as much as digits as its factorization.

1382867257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 49.

The square root of 1382867257 is about 37186.9231988881. The cubic root of 1382867257 is about 1114.1068160487.

The spelling of 1382867257 in words is "one billion, three hundred eighty-two million, eight hundred sixty-seven thousand, two hundred fifty-seven".