63438019 has 2 divisors, whose sum is σ = 63438020. Its totient is φ = 63438018.

The previous prime is 63438013. The next prime is 63438031. The reversal of 63438019 is 91083436.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63438019 is a prime.

It is a super-2 number, since 2×63438019² = 8048764509288722, which contains 22 as substring.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (63438013) 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, 31719009 + 31719010.

It is an arithmetic number, because the mean of its divisors is an integer number (31719010).

Almost surely, 2^63438019 is an apocalyptic number.

63438019 is a deficient number, since it is larger than the sum of its proper divisors (1).

63438019 is an equidigital number, since it uses as much as digits as its factorization.

63438019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 63438019 is about 7964.7987419645. The cubic root of 63438019 is about 398.8257625390.

The spelling of 63438019 in words is "sixty-three million, four hundred thirty-eight thousand, nineteen".