1381705003 has 4 divisors (see below), whose sum is σ = 1579091440. Its totient is φ = 1184318568.

The previous prime is 1381704991. The next prime is 1381705057. The reversal of 1381705003 is 3005071831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1381705003 - 2²⁵ = 1348150571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381705063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98693208 + ... + 98693221.

It is an arithmetic number, because the mean of its divisors is an integer number (394772860).

Almost surely, 2^1381705003 is an apocalyptic number.

1381705003 is a deficient number, since it is larger than the sum of its proper divisors (197386437).

1381705003 is an equidigital number, since it uses as much as digits as its factorization.

1381705003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197386436.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1381705003 is about 37171.2927270495. The cubic root of 1381705003 is about 1113.7946053062.

Adding to 1381705003 its reverse (3005071831), we get a palindrome (4386776834).

The spelling of 1381705003 in words is "one billion, three hundred eighty-one million, seven hundred five thousand, three".