438634436834 has 8 divisors (see below), whose sum is σ = 717765442128. Its totient is φ = 199379289460.

The previous prime is 438634436831. The next prime is 438634436837.

438634436834 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (438634436831) and next prime (438634436837).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 438634436834.

It is not an unprimeable number, because it can be changed into a prime (438634436831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9968964452 + ... + 9968964495.

It is an arithmetic number, because the mean of its divisors is an integer number (89720680266).

Almost surely, 2^438634436834 is an apocalyptic number.

438634436834 is a deficient number, since it is larger than the sum of its proper divisors (279131005294).

438634436834 is a wasteful number, since it uses less digits than its factorization.

438634436834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19937928960.

The product of its digits is 47775744, while the sum is 56.

The spelling of 438634436834 in words is "four hundred thirty-eight billion, six hundred thirty-four million, four hundred thirty-six thousand, eight hundred thirty-four".