1385015287 has 2 divisors, whose sum is σ = 1385015288. Its totient is φ = 1385015286.

The previous prime is 1385015243. The next prime is 1385015293. The reversal of 1385015287 is 7825105831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385015287 - 2¹⁵ = 1384982519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385015207) 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, 692507643 + 692507644.

It is an arithmetic number, because the mean of its divisors is an integer number (692507644).

Almost surely, 2^1385015287 is an apocalyptic number.

1385015287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385015287 is an equidigital number, since it uses as much as digits as its factorization.

1385015287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 1385015287 is about 37215.7935156568. The cubic root of 1385015287 is about 1114.6833709860.

The spelling of 1385015287 in words is "one billion, three hundred eighty-five million, fifteen thousand, two hundred eighty-seven".