16945798 has 4 divisors (see below), whose sum is σ = 25418700. Its totient is φ = 8472898.

The previous prime is 16945793. The next prime is 16945801. The reversal of 16945798 is 89754961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89754961 = 4327 ⋅20743.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16945793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236448 + ... + 4236451.

It is an arithmetic number, because the mean of its divisors is an integer number (6354675).

Almost surely, 2^16945798 is an apocalyptic number.

16945798 is a deficient number, since it is larger than the sum of its proper divisors (8472902).

16945798 is an equidigital number, since it uses as much as digits as its factorization.

16945798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8472901.

The product of its digits is 544320, while the sum is 49.

The square root of 16945798 is about 4116.5274200471. The cubic root of 16945798 is about 256.8545963473.

The spelling of 16945798 in words is "sixteen million, nine hundred forty-five thousand, seven hundred ninety-eight".