18980206 has 16 divisors (see below), whose sum is σ = 32639616. Its totient is φ = 8108856.

The previous prime is 18980167. The next prime is 18980231. The reversal of 18980206 is 60208981.

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, 2905 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (2039976).

Almost surely, 2^18980206 is an apocalyptic number.

18980206 is a deficient number, since it is larger than the sum of its proper divisors (13659410).

18980206 is a wasteful number, since it uses less digits than its factorization.

18980206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18980206 is about 4356.6278243614. The cubic root of 18980206 is about 266.7474689165.

The spelling of 18980206 in words is "eighteen million, nine hundred eighty thousand, two hundred six".