438382513 has 2 divisors, whose sum is σ = 438382514. Its totient is φ = 438382512.

The previous prime is 438382493. The next prime is 438382559. The reversal of 438382513 is 315283834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231252849 + 207129664 = 15207^2 + 14392^2 .

It is a cyclic number.

It is not a de Polignac number, because 438382513 - 2⁵ = 438382481 is a prime.

It is not a weakly prime, because it can be changed into another prime (438382313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219191256 + 219191257.

It is an arithmetic number, because the mean of its divisors is an integer number (219191257).

Almost surely, 2^438382513 is an apocalyptic number.

It is an amenable number.

438382513 is a deficient number, since it is larger than the sum of its proper divisors (1).

438382513 is an equidigital number, since it uses as much as digits as its factorization.

438382513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 438382513 is about 20937.5861311661. The cubic root of 438382513 is about 759.6573438008.

The spelling of 438382513 in words is "four hundred thirty-eight million, three hundred eighty-two thousand, five hundred thirteen".