16858105238 has 24 divisors (see below), whose sum is σ = 27441602496. Its totient is φ = 7763714400.

The previous prime is 16858105211. The next prime is 16858105273. The reversal of 16858105238 is 83250185861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16858105192 and 16858105201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101723 + ... + 209913.

It is an arithmetic number, because the mean of its divisors is an integer number (1143400104).

Almost surely, 2^16858105238 is an apocalyptic number.

16858105238 is a deficient number, since it is larger than the sum of its proper divisors (10583497258).

16858105238 is a wasteful number, since it uses less digits than its factorization.

16858105238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108680 (or 108667 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 16858105238 in words is "sixteen billion, eight hundred fifty-eight million, one hundred five thousand, two hundred thirty-eight".