18782098 has 8 divisors (see below), whose sum is σ = 28243260. Its totient is φ = 9367680.

The previous prime is 18782081. The next prime is 18782107. The reversal of 18782098 is 89028781.

It can be written as a sum of positive squares in 2 ways, for example, as 16670889 + 2111209 = 4083^2 + 1453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 10663 + ... + 12298.

Almost surely, 2^18782098 is an apocalyptic number.

18782098 is a deficient number, since it is larger than the sum of its proper divisors (9461162).

18782098 is a wasteful number, since it uses less digits than its factorization.

18782098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23372.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 18782098 is about 4333.8317918443. The cubic root of 18782098 is about 265.8161523822.

The spelling of 18782098 in words is "eighteen million, seven hundred eighty-two thousand, ninety-eight".