16907138 has 4 divisors (see below), whose sum is σ = 25360710. Its totient is φ = 8453568.

The previous prime is 16907123. The next prime is 16907147. The reversal of 16907138 is 83170961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13053769 + 3853369 = 3613^2 + 1963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16907098 and 16907107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226783 + ... + 4226786.

Almost surely, 2^16907138 is an apocalyptic number.

16907138 is a deficient number, since it is larger than the sum of its proper divisors (8453572).

16907138 is an equidigital number, since it uses as much as digits as its factorization.

16907138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453571.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 16907138 is about 4111.8290334108. The cubic root of 16907138 is about 256.6591189850.

The spelling of 16907138 in words is "sixteen million, nine hundred seven thousand, one hundred thirty-eight".