1100381603 has 2 divisors, whose sum is σ = 1100381604. Its totient is φ = 1100381602.

The previous prime is 1100381497. The next prime is 1100381621. The reversal of 1100381603 is 3061830011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100381603 - 2¹⁰ = 1100380579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100281603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550190801 + 550190802.

It is an arithmetic number, because the mean of its divisors is an integer number (550190802).

Almost surely, 2^1100381603 is an apocalyptic number.

1100381603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100381603 is an equidigital number, since it uses as much as digits as its factorization.

1100381603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1100381603 is about 33172.0002863861. Note that the first 3 decimals coincide. The cubic root of 1100381603 is about 1032.3994717126.

The spelling of 1100381603 in words is "one billion, one hundred million, three hundred eighty-one thousand, six hundred three".