16699118 has 4 divisors (see below), whose sum is σ = 25048680. Its totient is φ = 8349558.

The previous prime is 16699091. The next prime is 16699139. The reversal of 16699118 is 81199661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81199661 = 1847 ⋅43963.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174778 + ... + 4174781.

It is an arithmetic number, because the mean of its divisors is an integer number (6262170).

Almost surely, 2^16699118 is an apocalyptic number.

16699118 is a deficient number, since it is larger than the sum of its proper divisors (8349562).

16699118 is an equidigital number, since it uses as much as digits as its factorization.

16699118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349561.

The product of its digits is 23328, while the sum is 41.

The square root of 16699118 is about 4086.4554322787. The cubic root of 16699118 is about 255.6021550673.

The spelling of 16699118 in words is "sixteen million, six hundred ninety-nine thousand, one hundred eighteen".