16938437285 has 48 divisors (see below), whose sum is σ = 26643955968. Its totient is φ = 10099879680.

The previous prime is 16938437273. The next prime is 16938437303. The reversal of 16938437285 is 58273483961.

16938437285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16938437285 - 2¹² = 16938433189 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16938437285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10457 + ... + 184353.

It is an arithmetic number, because the mean of its divisors is an integer number (555082416).

Almost surely, 2^16938437285 is an apocalyptic number.

It is an amenable number.

16938437285 is a deficient number, since it is larger than the sum of its proper divisors (9705518683).

16938437285 is a wasteful number, since it uses less digits than its factorization.

16938437285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173954 (or 173943 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 16938437285 in words is "sixteen billion, nine hundred thirty-eight million, four hundred thirty-seven thousand, two hundred eighty-five".