1080001603 has 2 divisors, whose sum is σ = 1080001604. Its totient is φ = 1080001602.

The previous prime is 1080001583. The next prime is 1080001613. The reversal of 1080001603 is 3061000801.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080001603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1080001613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540000801 + 540000802.

It is an arithmetic number, because the mean of its divisors is an integer number (540000802).

Almost surely, 2^1080001603 is an apocalyptic number.

1080001603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080001603 is an equidigital number, since it uses as much as digits as its factorization.

1080001603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1080001603 is about 32863.3778391692. The cubic root of 1080001603 is about 1025.9860756153.

The spelling of 1080001603 in words is "one billion, eighty million, one thousand, six hundred three".