1380648959 has 2 divisors, whose sum is σ = 1380648960. Its totient is φ = 1380648958.

The previous prime is 1380648949. The next prime is 1380648961. The reversal of 1380648959 is 9598460831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380648959 is a prime.

Together with 1380648961, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1380648959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380648949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690324479 + 690324480.

It is an arithmetic number, because the mean of its divisors is an integer number (690324480).

Almost surely, 2^1380648959 is an apocalyptic number.

1380648959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380648959 is an equidigital number, since it uses as much as digits as its factorization.

1380648959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 1380648959 is about 37157.0849098796. The cubic root of 1380648959 is about 1113.5107733987.

The spelling of 1380648959 in words is "one billion, three hundred eighty million, six hundred forty-eight thousand, nine hundred fifty-nine".