1381383904403 has 16 divisors (see below), whose sum is σ = 1423095258816. Its totient is φ = 1339904839680.

The previous prime is 1381383904387. The next prime is 1381383904421. The reversal of 1381383904403 is 3044093831831.

It is a cyclic number.

It is not a de Polignac number, because 1381383904403 - 2⁴ = 1381383904387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381383904493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63609275 + ... + 63630987.

It is an arithmetic number, because the mean of its divisors is an integer number (88943453676).

Almost surely, 2^{1381383904403} is an apocalyptic number.

1381383904403 is a deficient number, since it is larger than the sum of its proper divisors (41711354413).

1381383904403 is a wasteful number, since it uses less digits than its factorization.

1381383904403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26974.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 1381383904403 in words is "one trillion, three hundred eighty-one billion, three hundred eighty-three million, nine hundred four thousand, four hundred three".