18290986 has 8 divisors (see below), whose sum is σ = 31356000. Its totient is φ = 7838988.

The previous prime is 18290983. The next prime is 18291001. The reversal of 18290986 is 68909281.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (18290983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653236 + ... + 653263.

It is an arithmetic number, because the mean of its divisors is an integer number (3919500).

Almost surely, 2^18290986 is an apocalyptic number.

18290986 is a deficient number, since it is larger than the sum of its proper divisors (13065014).

18290986 is a wasteful number, since it uses less digits than its factorization.

18290986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306508.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 18290986 is about 4276.7962308251. The cubic root of 18290986 is about 263.4788175779.

The spelling of 18290986 in words is "eighteen million, two hundred ninety thousand, nine hundred eighty-six".