18980026 has 16 divisors (see below), whose sum is σ = 30731904. Its totient is φ = 8739504.

The previous prime is 18980011. The next prime is 18980047. The reversal of 18980026 is 62008981.

It is a junction number, because it is equal to n+sod(n) for n = 18979973 and 18980000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20955 + ... + 21841.

It is an arithmetic number, because the mean of its divisors is an integer number (1920744).

Almost surely, 2^18980026 is an apocalyptic number.

18980026 is a deficient number, since it is larger than the sum of its proper divisors (11751878).

18980026 is a wasteful number, since it uses less digits than its factorization.

18980026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725.

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

The square root of 18980026 is about 4356.6071661328. The cubic root of 18980026 is about 266.7466256750.

The spelling of 18980026 in words is "eighteen million, nine hundred eighty thousand, twenty-six".