1388003103 has 12 divisors (see below), whose sum is σ = 2092062960. Its totient is φ = 885103296.

The previous prime is 1388003081. The next prime is 1388003117. The reversal of 1388003103 is 3013008831.

It is not a de Polignac number, because 1388003103 - 2⁶ = 1388003039 is a prime.

It is a super-2 number, since 2×1388003103² = 3853105227875257218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388003173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3352458 + ... + 3352871.

It is an arithmetic number, because the mean of its divisors is an integer number (174338580).

Almost surely, 2^1388003103 is an apocalyptic number.

1388003103 is a deficient number, since it is larger than the sum of its proper divisors (704059857).

1388003103 is a wasteful number, since it uses less digits than its factorization.

1388003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705358 (or 6705355 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1388003103 is about 37255.9136648130. The cubic root of 1388003103 is about 1115.4843433243.

It can be divided in two parts, 138 and 8003103, that added together give a square (8003241 = 2829²).

The spelling of 1388003103 in words is "one billion, three hundred eighty-eight million, three thousand, one hundred three".