1123562161 has 2 divisors, whose sum is σ = 1123562162. Its totient is φ = 1123562160.

The previous prime is 1123562021. The next prime is 1123562173. The reversal of 1123562161 is 1612653211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903603600 + 219958561 = 30060^2 + 14831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123562161 - 2¹³ = 1123553969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123562261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561781080 + 561781081.

It is an arithmetic number, because the mean of its divisors is an integer number (561781081).

Almost surely, 2^1123562161 is an apocalyptic number.

It is an amenable number.

1123562161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123562161 is an equidigital number, since it uses as much as digits as its factorization.

1123562161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 1123562161 is about 33519.5787712197. The cubic root of 1123562161 is about 1039.5986373452.

The spelling of 1123562161 in words is "one billion, one hundred twenty-three million, five hundred sixty-two thousand, one hundred sixty-one".