1161166603 has 2 divisors, whose sum is σ = 1161166604. Its totient is φ = 1161166602.

The previous prime is 1161166561. The next prime is 1161166619. The reversal of 1161166603 is 3066611611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161166603 - 2⁹ = 1161166091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161166693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580583301 + 580583302.

It is an arithmetic number, because the mean of its divisors is an integer number (580583302).

Almost surely, 2^1161166603 is an apocalyptic number.

1161166603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161166603 is an equidigital number, since it uses as much as digits as its factorization.

1161166603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1161166603 is about 34075.8947498081. The cubic root of 1161166603 is about 1051.0696893227.

The spelling of 1161166603 in words is "one billion, one hundred sixty-one million, one hundred sixty-six thousand, six hundred three".