1381411565 has 16 divisors (see below), whose sum is σ = 1705472496. Its totient is φ = 1073510400.

The previous prime is 1381411547. The next prime is 1381411567. The reversal of 1381411565 is 5651141831.

It can be written as a sum of positive squares in 8 ways, for example, as 196812841 + 1184598724 = 14029^2 + 34418^2 .

It is not a de Polignac number, because 1381411565 - 2¹⁴ = 1381395181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381411567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33305 + ... + 62225.

It is an arithmetic number, because the mean of its divisors is an integer number (106592031).

Almost surely, 2^1381411565 is an apocalyptic number.

It is an amenable number.

1381411565 is a deficient number, since it is larger than the sum of its proper divisors (324060931).

1381411565 is a wasteful number, since it uses less digits than its factorization.

1381411565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29200.

The product of its digits is 14400, while the sum is 35.

The square root of 1381411565 is about 37167.3454123374. The cubic root of 1381411565 is about 1113.7157527774.

The spelling of 1381411565 in words is "one billion, three hundred eighty-one million, four hundred eleven thousand, five hundred sixty-five".