1388303983003 has 12 divisors (see below), whose sum is σ = 1615220185680. Its totient is φ = 1189787443152.

The previous prime is 1388303982983. The next prime is 1388303983007. The reversal of 1388303983003 is 3003893038831.

It is a happy number.

It is not a de Polignac number, because 1388303983003 - 2⁵ = 1388303982971 is a prime.

It is a super-2 number, since 2×1388303983003² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388303983007) 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, 1916176 + ... + 2539357.

It is an arithmetic number, because the mean of its divisors is an integer number (134601682140).

Almost surely, 2^{1388303983003} is an apocalyptic number.

1388303983003 is a deficient number, since it is larger than the sum of its proper divisors (226916202677).

1388303983003 is an equidigital number, since it uses as much as digits as its factorization.

1388303983003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461906 (or 4461899 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 1388303983003 in words is "one trillion, three hundred eighty-eight billion, three hundred three million, nine hundred eighty-three thousand, three".