18022701 has 4 divisors (see below), whose sum is σ = 24030272. Its totient is φ = 12015132.

The previous prime is 18022691. The next prime is 18022727. The reversal of 18022701 is 10722081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18022701 - 2¹⁰ = 18021677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18022201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3003781 + ... + 3003786.

It is an arithmetic number, because the mean of its divisors is an integer number (6007568).

Almost surely, 2^18022701 is an apocalyptic number.

It is an amenable number.

18022701 is a deficient number, since it is larger than the sum of its proper divisors (6007571).

18022701 is an equidigital number, since it uses as much as digits as its factorization.

18022701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007570.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 18022701 is about 4245.3151826455. The cubic root of 18022701 is about 262.1842661941.

Adding to 18022701 its reverse (10722081), we get a palindrome (28744782).

The spelling of 18022701 in words is "eighteen million, twenty-two thousand, seven hundred one".