1380395545 has 8 divisors (see below), whose sum is σ = 1666050696. Its totient is φ = 1097932416.

The previous prime is 1380395537. The next prime is 1380395579. The reversal of 1380395545 is 5455930831.

It can be written as a sum of positive squares in 4 ways, for example, as 121352256 + 1259043289 = 11016^2 + 35483^2 .

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 1380395545 - 2³ = 1380395537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797052 + ... + 798781.

It is an arithmetic number, because the mean of its divisors is an integer number (208256337).

Almost surely, 2^1380395545 is an apocalyptic number.

It is an amenable number.

1380395545 is a deficient number, since it is larger than the sum of its proper divisors (285655151).

1380395545 is a wasteful number, since it uses less digits than its factorization.

1380395545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596011.

The product of its (nonzero) digits is 324000, while the sum is 43.

The square root of 1380395545 is about 37153.6747173143. The cubic root of 1380395545 is about 1113.4426420359.

The spelling of 1380395545 in words is "one billion, three hundred eighty million, three hundred ninety-five thousand, five hundred forty-five".