1385282557 has 2 divisors, whose sum is σ = 1385282558. Its totient is φ = 1385282556.

The previous prime is 1385282551. The next prime is 1385282567. The reversal of 1385282557 is 7552825831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754820676 + 630461881 = 27474^2 + 25109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385282557 - 2⁷ = 1385282429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385282551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692641278 + 692641279.

It is an arithmetic number, because the mean of its divisors is an integer number (692641279).

Almost surely, 2^1385282557 is an apocalyptic number.

It is an amenable number.

1385282557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385282557 is an equidigital number, since it uses as much as digits as its factorization.

1385282557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 46.

The square root of 1385282557 is about 37219.3841566461. The cubic root of 1385282557 is about 1114.7550674902.

The spelling of 1385282557 in words is "one billion, three hundred eighty-five million, two hundred eighty-two thousand, five hundred fifty-seven".