438158630443 has 2 divisors, whose sum is σ = 438158630444. Its totient is φ = 438158630442.

The previous prime is 438158630389. The next prime is 438158630447. The reversal of 438158630443 is 344036851834.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438158630443 is a prime.

It is not a weakly prime, because it can be changed into another prime (438158630447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219079315221 + 219079315222.

It is an arithmetic number, because the mean of its divisors is an integer number (219079315222).

Almost surely, 2^438158630443 is an apocalyptic number.

438158630443 is a deficient number, since it is larger than the sum of its proper divisors (1).

438158630443 is an equidigital number, since it uses as much as digits as its factorization.

438158630443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 49.

It can be divided in two parts, 438158 and 630443, that added together give a palindrome (1068601).

The spelling of 438158630443 in words is "four hundred thirty-eight billion, one hundred fifty-eight million, six hundred thirty thousand, four hundred forty-three".