1380325779 has 28 divisors (see below), whose sum is σ = 2365199536. Its totient is φ = 788754672.

The previous prime is 1380325769. The next prime is 1380325819. The reversal of 1380325779 is 9775230831.

It is a happy number.

It is not a de Polignac number, because 1380325779 - 2¹⁹ = 1379801491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1380325769) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 130144 + ... + 140349.

It is an arithmetic number, because the mean of its divisors is an integer number (84471412).

Almost surely, 2^1380325779 is an apocalyptic number.

1380325779 is a deficient number, since it is larger than the sum of its proper divisors (984873757).

1380325779 is an frugal number, since it uses more digits than its factorization.

1380325779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270518 (or 270503 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 1380325779 is about 37152.7358212016. The cubic root of 1380325779 is about 1113.4238837053.

The spelling of 1380325779 in words is "one billion, three hundred eighty million, three hundred twenty-five thousand, seven hundred seventy-nine".