1096721603 has 2 divisors, whose sum is σ = 1096721604. Its totient is φ = 1096721602.

The previous prime is 1096721573. The next prime is 1096721609. The reversal of 1096721603 is 3061276901.

It is a strong prime.

It is an emirp because it is prime and its reverse (3061276901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1096721603 - 2¹² = 1096717507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1096721609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548360801 + 548360802.

It is an arithmetic number, because the mean of its divisors is an integer number (548360802).

Almost surely, 2^1096721603 is an apocalyptic number.

1096721603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1096721603 is an equidigital number, since it uses as much as digits as its factorization.

1096721603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1096721603 is about 33116.7873290873. The cubic root of 1096721603 is about 1031.2535725227.

The spelling of 1096721603 in words is "one billion, ninety-six million, seven hundred twenty-one thousand, six hundred three".