434839426638 has 16 divisors (see below), whose sum is σ = 869709545040. Its totient is φ = 144941360256.

The previous prime is 434839426633. The next prime is 434839426691. The reversal of 434839426638 is 836624938434.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434839426633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092553 + ... + 1436436.

It is an arithmetic number, because the mean of its divisors is an integer number (54356846565).

Almost surely, 2^434839426638 is an apocalyptic number.

434839426638 is an abundant number, since it is smaller than the sum of its proper divisors (434870118402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

434839426638 is a wasteful number, since it uses less digits than its factorization.

434839426638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557651.

The product of its digits is 71663616, while the sum is 60.

The spelling of 434839426638 in words is "four hundred thirty-four billion, eight hundred thirty-nine million, four hundred twenty-six thousand, six hundred thirty-eight".