18036026 has 4 divisors (see below), whose sum is σ = 27054042. Its totient is φ = 9018012.

The previous prime is 18036013. The next prime is 18036047. The reversal of 18036026 is 62063081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 9006001 = 3005^2 + 3001^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18035986 and 18036004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4509005 + ... + 4509008.

Almost surely, 2^18036026 is an apocalyptic number.

18036026 is a deficient number, since it is larger than the sum of its proper divisors (9018016).

18036026 is an equidigital number, since it uses as much as digits as its factorization.

18036026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018015.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 18036026 is about 4246.8842696735. The cubic root of 18036026 is about 262.2488651815.

The spelling of 18036026 in words is "eighteen million, thirty-six thousand, twenty-six".