16434365438 has 48 divisors (see below), whose sum is σ = 26414309376. Its totient is φ = 7666805520.

The previous prime is 16434365411. The next prime is 16434365471. The reversal of 16434365438 is 83456343461.

It is a super-4 number, since 4×16434365438⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16434365392 and 16434365401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16583123 + ... + 16584113.

It is an arithmetic number, because the mean of its divisors is an integer number (550298112).

Almost surely, 2^16434365438 is an apocalyptic number.

16434365438 is a deficient number, since it is larger than the sum of its proper divisors (9979943938).

16434365438 is a wasteful number, since it uses less digits than its factorization.

16434365438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1338 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 47.

The spelling of 16434365438 in words is "sixteen billion, four hundred thirty-four million, three hundred sixty-five thousand, four hundred thirty-eight".