16938137 has 4 divisors (see below), whose sum is σ = 17934516. Its totient is φ = 15941760.

The previous prime is 16938127. The next prime is 16938157. The reversal of 16938137 is 73183961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73183961 = 1951 ⋅37511.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 5621641 = 3364^2 + 2371^2 .

It is a cyclic number.

It is not a de Polignac number, because 16938137 - 2⁸ = 16937881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16938137.

It is not an unprimeable number, because it can be changed into a prime (16938107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498164 + ... + 498197.

It is an arithmetic number, because the mean of its divisors is an integer number (4483629).

Almost surely, 2^16938137 is an apocalyptic number.

16938137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16938137 is a deficient number, since it is larger than the sum of its proper divisors (996379).

16938137 is an equidigital number, since it uses as much as digits as its factorization.

16938137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996378.

The product of its digits is 27216, while the sum is 38.

The square root of 16938137 is about 4115.5967975495. The cubic root of 16938137 is about 256.8158835118.

The spelling of 16938137 in words is "sixteen million, nine hundred thirty-eight thousand, one hundred thirty-seven".