1903404055481 has 4 divisors (see below), whose sum is σ = 1903426614864. Its totient is φ = 1903381496100.

The previous prime is 1903404055439. The next prime is 1903404055517. The reversal of 1903404055481 is 1845504043091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1903404055481 - 2²⁶ = 1903336946617 is a prime.

It is a super-2 number, since 2×1903404055481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1903404051481) 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, 11152655 + ... + 11322036.

It is an arithmetic number, because the mean of its divisors is an integer number (475856653716).

Almost surely, 2^{1903404055481} is an apocalyptic number.

It is an amenable number.

1903404055481 is a deficient number, since it is larger than the sum of its proper divisors (22559383).

1903404055481 is an equidigital number, since it uses as much as digits as its factorization.

1903404055481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22559382.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 1903404055481 in words is "one trillion, nine hundred three billion, four hundred four million, fifty-five thousand, four hundred eighty-one".