1380847689 has 64 divisors (see below), whose sum is σ = 2270177280. Its totient is φ = 824281920.

The previous prime is 1380847681. The next prime is 1380847703. The reversal of 1380847689 is 9867480831.

1380847689 is a `hidden beast` number, since 13 + 80 + 8 + 476 + 89 = 666.

It is not a de Polignac number, because 1380847689 - 2³ = 1380847681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1380847681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1669294 + ... + 1670120.

It is an arithmetic number, because the mean of its divisors is an integer number (35471520).

Almost surely, 2^1380847689 is an apocalyptic number.

It is an amenable number.

1380847689 is a deficient number, since it is larger than the sum of its proper divisors (889329591).

1380847689 is a wasteful number, since it uses less digits than its factorization.

1380847689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 1380847689 is about 37159.7590008331. The cubic root of 1380847689 is about 1113.5641969181.

The spelling of 1380847689 in words is "one billion, three hundred eighty million, eight hundred forty-seven thousand, six hundred eighty-nine".