10403138891 has 8 divisors (see below), whose sum is σ = 10422442800. Its totient is φ = 10383851520.

The previous prime is 10403138887. The next prime is 10403138927. The reversal of 10403138891 is 19883130401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10403138891 - 2² = 10403138887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10403138861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2319371 + ... + 2323851.

It is an arithmetic number, because the mean of its divisors is an integer number (1302805350).

Almost surely, 2^10403138891 is an apocalyptic number.

10403138891 is a deficient number, since it is larger than the sum of its proper divisors (19303909).

10403138891 is an equidigital number, since it uses as much as digits as its factorization.

10403138891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 10403138891 in words is "ten billion, four hundred three million, one hundred thirty-eight thousand, eight hundred ninety-one".