16938889438 has 8 divisors (see below), whose sum is σ = 25729958880. Its totient is φ = 8362236480.

The previous prime is 16938889427. The next prime is 16938889447. The reversal of 16938889438 is 83498883961.

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

It is a congruent number.

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, 53603923 + ... + 53604238.

It is an arithmetic number, because the mean of its divisors is an integer number (3216244860).

Almost surely, 2^16938889438 is an apocalyptic number.

16938889438 is a deficient number, since it is larger than the sum of its proper divisors (8791069442).

16938889438 is a wasteful number, since it uses less digits than its factorization.

16938889438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107208242.

The product of its digits is 71663616, while the sum is 67.

The spelling of 16938889438 in words is "sixteen billion, nine hundred thirty-eight million, eight hundred eighty-nine thousand, four hundred thirty-eight".