1380388165 has 16 divisors (see below), whose sum is σ = 1785805056. Its totient is φ = 1018267200.

The previous prime is 1380388159. The next prime is 1380388169. The reversal of 1380388165 is 5618830831.

It is a de Polignac number, because none of the positive numbers 2^k-1380388165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380388169) 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 15 ways as a sum of consecutive naturals, for example, 52180 + ... + 74050.

It is an arithmetic number, because the mean of its divisors is an integer number (111612816).

Almost surely, 2^1380388165 is an apocalyptic number.

It is an amenable number.

1380388165 is a deficient number, since it is larger than the sum of its proper divisors (405416891).

1380388165 is a wasteful number, since it uses less digits than its factorization.

1380388165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22860.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1380388165 is about 37153.5753999531. The cubic root of 1380388165 is about 1113.4406577685.

The spelling of 1380388165 in words is "one billion, three hundred eighty million, three hundred eighty-eight thousand, one hundred sixty-five".