1380320805 has 8 divisors (see below), whose sum is σ = 2208513312. Its totient is φ = 736171088.

The previous prime is 1380320803. The next prime is 1380320807. The reversal of 1380320805 is 5080230831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1380320803) and next prime (1380320807).

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

It is a cyclic number.

It is not a de Polignac number, because 1380320805 - 2¹ = 1380320803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380320803) 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, 46010679 + ... + 46010708.

It is an arithmetic number, because the mean of its divisors is an integer number (276064164).

Almost surely, 2^1380320805 is an apocalyptic number.

1380320805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1380320805 is a deficient number, since it is larger than the sum of its proper divisors (828192507).

1380320805 is an equidigital number, since it uses as much as digits as its factorization.

1380320805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92021395.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1380320805 is about 37152.6688812527. The cubic root of 1380320805 is about 1113.4225462971.

The spelling of 1380320805 in words is "one billion, three hundred eighty million, three hundred twenty thousand, eight hundred five".