1382657643 has 12 divisors (see below), whose sum is σ = 2001181000. Its totient is φ = 919921536.

The previous prime is 1382657557. The next prime is 1382657677. The reversal of 1382657643 is 3467562831.

1382657643 is a `hidden beast` number, since 1 + 38 + 2 + 6 + 576 + 43 = 666.

It is not a de Polignac number, because 1382657643 - 2²⁰ = 1381609067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1382656643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149446 + ... + 158427.

Almost surely, 2^1382657643 is an apocalyptic number.

1382657643 is a deficient number, since it is larger than the sum of its proper divisors (618523357).

1382657643 is a wasteful number, since it uses less digits than its factorization.

1382657643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308378 (or 308375 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1382657643 is about 37184.1047088672. The cubic root of 1382657643 is about 1114.0505213742.

The spelling of 1382657643 in words is "one billion, three hundred eighty-two million, six hundred fifty-seven thousand, six hundred forty-three".