103998518 has 16 divisors (see below), whose sum is σ = 168740880. Its totient is φ = 47786976.

The previous prime is 103998493. The next prime is 103998529. The reversal of 103998518 is 815899301.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2780 + ... + 14687.

It is an arithmetic number, because the mean of its divisors is an integer number (10546305).

Almost surely, 2^103998518 is an apocalyptic number.

103998518 is a deficient number, since it is larger than the sum of its proper divisors (64742362).

103998518 is a wasteful number, since it uses less digits than its factorization.

103998518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17711.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 103998518 is about 10197.9663658986. The cubic root of 103998518 is about 470.2647037656.

The spelling of 103998518 in words is "one hundred three million, nine hundred ninety-eight thousand, five hundred eighteen".