1385268647 has 32 divisors (see below), whose sum is σ = 1720922112. Its totient is φ = 1088031744.

The previous prime is 1385268637. The next prime is 1385268667. The reversal of 1385268647 is 7468625831.

It is a cyclic number.

It is not a de Polignac number, because 1385268647 - 2¹⁴ = 1385252263 is a prime.

It is a super-2 number, since 2×1385268647² = 3837938448722421218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1385268595 and 1385268604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385268637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1302638 + ... + 1303700.

It is an arithmetic number, because the mean of its divisors is an integer number (53778816).

Almost surely, 2^1385268647 is an apocalyptic number.

1385268647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1385268647 is a deficient number, since it is larger than the sum of its proper divisors (335653465).

1385268647 is a wasteful number, since it uses less digits than its factorization.

1385268647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367.

The product of its digits is 1935360, while the sum is 50.

The square root of 1385268647 is about 37219.1972911829. The cubic root of 1385268647 is about 1114.7513362912.

The spelling of 1385268647 in words is "one billion, three hundred eighty-five million, two hundred sixty-eight thousand, six hundred forty-seven".