1381384783 has 2 divisors, whose sum is σ = 1381384784. Its totient is φ = 1381384782.

The previous prime is 1381384729. The next prime is 1381384789. The reversal of 1381384783 is 3874831831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1381384783 - 2⁹ = 1381384271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381384789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690692391 + 690692392.

It is an arithmetic number, because the mean of its divisors is an integer number (690692392).

Almost surely, 2^1381384783 is an apocalyptic number.

1381384783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381384783 is an equidigital number, since it uses as much as digits as its factorization.

1381384783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 1381384783 is about 37166.9851212067. The cubic root of 1381384783 is about 1113.7085553742.

It can be divided in two parts, 13813 and 84783, that added together give a square (98596 = 314²).

The spelling of 1381384783 in words is "one billion, three hundred eighty-one million, three hundred eighty-four thousand, seven hundred eighty-three".