438252632819 has 2 divisors, whose sum is σ = 438252632820. Its totient is φ = 438252632818.

The previous prime is 438252632777. The next prime is 438252632833. The reversal of 438252632819 is 918236252834.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438252632819 is a prime.

It is a super-2 number, since 2×438252632819² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (438252602819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219126316409 + 219126316410.

It is an arithmetic number, because the mean of its divisors is an integer number (219126316410).

Almost surely, 2^438252632819 is an apocalyptic number.

438252632819 is a deficient number, since it is larger than the sum of its proper divisors (1).

438252632819 is an equidigital number, since it uses as much as digits as its factorization.

438252632819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 53.

The spelling of 438252632819 in words is "four hundred thirty-eight billion, two hundred fifty-two million, six hundred thirty-two thousand, eight hundred nineteen".