1380505141 has 2 divisors, whose sum is σ = 1380505142. Its totient is φ = 1380505140.

The previous prime is 1380505123. The next prime is 1380505157. The reversal of 1380505141 is 1415050831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1301117041 + 79388100 = 36071^2 + 8910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380505141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380505741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690252570 + 690252571.

It is an arithmetic number, because the mean of its divisors is an integer number (690252571).

Almost surely, 2^1380505141 is an apocalyptic number.

It is an amenable number.

1380505141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380505141 is an equidigital number, since it uses as much as digits as its factorization.

1380505141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1380505141 is about 37155.1495892561. The cubic root of 1380505141 is about 1113.4721083800.

Adding to 1380505141 its reverse (1415050831), we get a palindrome (2795555972).

It can be divided in two parts, 1380 and 505141, that added together give a triangular number (506521 = T₁₀₀₆).

The spelling of 1380505141 in words is "one billion, three hundred eighty million, five hundred five thousand, one hundred forty-one".