1381884149 has 2 divisors, whose sum is σ = 1381884150. Its totient is φ = 1381884148.

The previous prime is 1381884109. The next prime is 1381884167. The reversal of 1381884149 is 9414881831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1311743524 + 70140625 = 36218^2 + 8375^2 .

It is an emirp because it is prime and its reverse (9414881831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1381884149 - 2¹² = 1381880053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381884109) 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 as a sum of consecutive naturals, namely, 690942074 + 690942075.

It is an arithmetic number, because the mean of its divisors is an integer number (690942075).

Almost surely, 2^1381884149 is an apocalyptic number.

It is an amenable number.

1381884149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381884149 is an equidigital number, since it uses as much as digits as its factorization.

1381884149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 47.

The square root of 1381884149 is about 37173.7023848849. The cubic root of 1381884149 is about 1113.8427398514.

The spelling of 1381884149 in words is "one billion, three hundred eighty-one million, eight hundred eighty-four thousand, one hundred forty-nine".