1123636477 has 2 divisors, whose sum is σ = 1123636478. Its totient is φ = 1123636476.

The previous prime is 1123636433. The next prime is 1123636499. The reversal of 1123636477 is 7746363211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907575876 + 216060601 = 30126^2 + 14699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123636477 - 2¹⁹ = 1123112189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123636417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561818238 + 561818239.

It is an arithmetic number, because the mean of its divisors is an integer number (561818239).

Almost surely, 2^1123636477 is an apocalyptic number.

It is an amenable number.

1123636477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123636477 is an equidigital number, since it uses as much as digits as its factorization.

1123636477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 1123636477 is about 33520.6872990397. The cubic root of 1123636477 is about 1039.6215576344.

Adding to 1123636477 its reverse (7746363211), we get a palindrome (8869999688).

The spelling of 1123636477 in words is "one billion, one hundred twenty-three million, six hundred thirty-six thousand, four hundred seventy-seven".