18606982 has 4 divisors (see below), whose sum is σ = 27910476. Its totient is φ = 9303490.

The previous prime is 18606961. The next prime is 18606997. The reversal of 18606982 is 28960681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28960681 = 59 ⋅490859.

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, 4651744 + ... + 4651747.

It is an arithmetic number, because the mean of its divisors is an integer number (6977619).

Almost surely, 2^18606982 is an apocalyptic number.

18606982 is a deficient number, since it is larger than the sum of its proper divisors (9303494).

18606982 is an equidigital number, since it uses as much as digits as its factorization.

18606982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303493.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 18606982 is about 4313.5811108637. The cubic root of 18606982 is about 264.9874540162.

The spelling of 18606982 in words is "eighteen million, six hundred six thousand, nine hundred eighty-two".