438146621347 has 2 divisors, whose sum is σ = 438146621348. Its totient is φ = 438146621346.

The previous prime is 438146621281. The next prime is 438146621371. The reversal of 438146621347 is 743126641834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438146621347 - 2⁷ = 438146621219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438146621347.

It is not a weakly prime, because it can be changed into another prime (438146631347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219073310673 + 219073310674.

It is an arithmetic number, because the mean of its divisors is an integer number (219073310674).

Almost surely, 2^438146621347 is an apocalyptic number.

438146621347 is a deficient number, since it is larger than the sum of its proper divisors (1).

438146621347 is an equidigital number, since it uses as much as digits as its factorization.

438146621347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 49.

The spelling of 438146621347 in words is "four hundred thirty-eight billion, one hundred forty-six million, six hundred twenty-one thousand, three hundred forty-seven".