1380689983 has 2 divisors, whose sum is σ = 1380689984. Its totient is φ = 1380689982.

The previous prime is 1380689963. The next prime is 1380690049. The reversal of 1380689983 is 3899860831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380689983 - 2¹³ = 1380681791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380689923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690344991 + 690344992.

It is an arithmetic number, because the mean of its divisors is an integer number (690344992).

Almost surely, 2^1380689983 is an apocalyptic number.

1380689983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380689983 is an equidigital number, since it uses as much as digits as its factorization.

1380689983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 1380689983 is about 37157.6369404730. The cubic root of 1380689983 is about 1113.5218020803.

The spelling of 1380689983 in words is "one billion, three hundred eighty million, six hundred eighty-nine thousand, nine hundred eighty-three".