1385441903 has 2 divisors, whose sum is σ = 1385441904. Its totient is φ = 1385441902.

The previous prime is 1385441887. The next prime is 1385441909. The reversal of 1385441903 is 3091445831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385441903 - 2⁴ = 1385441887 is a prime.

It is a super-3 number, since 3×1385441903³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385441909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692720951 + 692720952.

It is an arithmetic number, because the mean of its divisors is an integer number (692720952).

Almost surely, 2^1385441903 is an apocalyptic number.

1385441903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385441903 is an equidigital number, since it uses as much as digits as its factorization.

1385441903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1385441903 is about 37221.5247269641. The cubic root of 1385441903 is about 1114.7978084578.

The spelling of 1385441903 in words is "one billion, three hundred eighty-five million, four hundred forty-one thousand, nine hundred three".