451930613 has 2 divisors, whose sum is σ = 451930614. Its totient is φ = 451930612.

The previous prime is 451930603. The next prime is 451930627. The reversal of 451930613 is 316039154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451052644 + 877969 = 21238^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 451930613 - 2²⁸ = 183495157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 451930613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451930603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225965306 + 225965307.

It is an arithmetic number, because the mean of its divisors is an integer number (225965307).

Almost surely, 2^451930613 is an apocalyptic number.

It is an amenable number.

451930613 is a deficient number, since it is larger than the sum of its proper divisors (1).

451930613 is an equidigital number, since it uses as much as digits as its factorization.

451930613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 451930613 is about 21258.6597178656. The cubic root of 451930613 is about 767.4037555400.

Adding to 451930613 its reverse (316039154), we get a palindrome (767969767).

The spelling of 451930613 in words is "four hundred fifty-one million, nine hundred thirty thousand, six hundred thirteen".