18368486 has 4 divisors (see below), whose sum is σ = 27552732. Its totient is φ = 9184242.

The previous prime is 18368473. The next prime is 18368491. The reversal of 18368486 is 68486381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68486381 = 2753 ⋅24877.

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, 4592120 + ... + 4592123.

It is an arithmetic number, because the mean of its divisors is an integer number (6888183).

Almost surely, 2^18368486 is an apocalyptic number.

18368486 is a deficient number, since it is larger than the sum of its proper divisors (9184246).

18368486 is an equidigital number, since it uses as much as digits as its factorization.

18368486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9184245.

The product of its digits is 221184, while the sum is 44.

The square root of 18368486 is about 4285.8471741302. The cubic root of 18368486 is about 263.8504184010.

The spelling of 18368486 in words is "eighteen million, three hundred sixty-eight thousand, four hundred eighty-six".