1603003423643 has 2 divisors, whose sum is σ = 1603003423644. Its totient is φ = 1603003423642.

The previous prime is 1603003423633. The next prime is 1603003423661. The reversal of 1603003423643 is 3463243003061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1603003423643 - 2²⁰ = 1603002375067 is a prime.

It is a super-2 number, since 2×1603003423643² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1603003423633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801501711821 + 801501711822.

It is an arithmetic number, because the mean of its divisors is an integer number (801501711822).

Almost surely, 2^{1603003423643} is an apocalyptic number.

1603003423643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603003423643 is an equidigital number, since it uses as much as digits as its factorization.

1603003423643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 35.

The spelling of 1603003423643 in words is "one trillion, six hundred three billion, three million, four hundred twenty-three thousand, six hundred forty-three".