1380280385 has 8 divisors (see below), whose sum is σ = 1806912576. Its totient is φ = 1003840240.

The previous prime is 1380280379. The next prime is 1380280387. The reversal of 1380280385 is 5830820831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1380280385 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1380280387) 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 7 ways as a sum of consecutive naturals, for example, 12547949 + ... + 12548058.

It is an arithmetic number, because the mean of its divisors is an integer number (225864072).

Almost surely, 2^1380280385 is an apocalyptic number.

It is an amenable number.

1380280385 is a deficient number, since it is larger than the sum of its proper divisors (426632191).

1380280385 is a wasteful number, since it uses less digits than its factorization.

1380280385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25096023.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1380280385 is about 37152.1249055825. The cubic root of 1380280385 is about 1113.4116780558.

The spelling of 1380280385 in words is "one billion, three hundred eighty million, two hundred eighty thousand, three hundred eighty-five".