633542449 has 2 divisors, whose sum is σ = 633542450. Its totient is φ = 633542448.

The previous prime is 633542447. The next prime is 633542513. The reversal of 633542449 is 944245336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631768225 + 1774224 = 25135^2 + 1332^2 .

It is a cyclic number.

It is not a de Polignac number, because 633542449 - 2¹ = 633542447 is a prime.

Together with 633542447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (633542447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316771224 + 316771225.

It is an arithmetic number, because the mean of its divisors is an integer number (316771225).

Almost surely, 2^633542449 is an apocalyptic number.

It is an amenable number.

633542449 is a deficient number, since it is larger than the sum of its proper divisors (1).

633542449 is an equidigital number, since it uses as much as digits as its factorization.

633542449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 40.

The square root of 633542449 is about 25170.2691483425. The cubic root of 633542449 is about 858.8656619410.

It can be divided in two parts, 6335 and 42449, that added together give a palindrome (48784).

The spelling of 633542449 in words is "six hundred thirty-three million, five hundred forty-two thousand, four hundred forty-nine".