438436634834 has 8 divisors (see below), whose sum is σ = 717441766128. Its totient is φ = 199289379460.

The previous prime is 438436634813. The next prime is 438436634851.

438436634834 is nontrivially palindromic in base 10.

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 438436634834.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9964468952 + ... + 9964468995.

It is an arithmetic number, because the mean of its divisors is an integer number (89680220766).

Almost surely, 2^438436634834 is an apocalyptic number.

438436634834 is a deficient number, since it is larger than the sum of its proper divisors (279005131294).

438436634834 is a wasteful number, since it uses less digits than its factorization.

438436634834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19928937960.

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

The spelling of 438436634834 in words is "four hundred thirty-eight billion, four hundred thirty-six million, six hundred thirty-four thousand, eight hundred thirty-four".