634543453 has 2 divisors, whose sum is σ = 634543454. Its totient is φ = 634543452.

The previous prime is 634543417. The next prime is 634543463. The reversal of 634543453 is 354345436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578787364 + 55756089 = 24058^2 + 7467^2 .

It is a cyclic number.

It is not a de Polignac number, because 634543453 - 2¹³ = 634535261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634543463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317271726 + 317271727.

It is an arithmetic number, because the mean of its divisors is an integer number (317271727).

Almost surely, 2^634543453 is an apocalyptic number.

It is an amenable number.

634543453 is a deficient number, since it is larger than the sum of its proper divisors (1).

634543453 is an equidigital number, since it uses as much as digits as its factorization.

634543453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 37.

The square root of 634543453 is about 25190.1459503513. The cubic root of 634543453 is about 859.3177629635.

Adding to 634543453 its reverse (354345436), we get a palindrome (988888889).

The spelling of 634543453 in words is "six hundred thirty-four million, five hundred forty-three thousand, four hundred fifty-three".