1155435803 has 2 divisors, whose sum is σ = 1155435804. Its totient is φ = 1155435802.

The previous prime is 1155435791. The next prime is 1155435811. The reversal of 1155435803 is 3085345511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155435803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155435823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577717901 + 577717902.

It is an arithmetic number, because the mean of its divisors is an integer number (577717902).

Almost surely, 2^1155435803 is an apocalyptic number.

1155435803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155435803 is an equidigital number, since it uses as much as digits as its factorization.

1155435803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 1155435803 is about 33991.7019726874. The cubic root of 1155435803 is about 1049.3376935884.

The spelling of 1155435803 in words is "one billion, one hundred fifty-five million, four hundred thirty-five thousand, eight hundred three".