18222701 has 8 divisors (see below), whose sum is σ = 21544320. Its totient is φ = 15080688.

The previous prime is 18222689. The next prime is 18222703. The reversal of 18222701 is 10722281.

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

It is not a de Polignac number, because 18222701 - 2¹⁰ = 18221677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44681 + ... + 45086.

It is an arithmetic number, because the mean of its divisors is an integer number (2693040).

Almost surely, 2^18222701 is an apocalyptic number.

It is an amenable number.

18222701 is a deficient number, since it is larger than the sum of its proper divisors (3321619).

18222701 is an equidigital number, since it uses as much as digits as its factorization.

18222701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89803.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 18222701 is about 4268.8055706485. The cubic root of 18222701 is about 263.1505304318.

Adding to 18222701 its reverse (10722281), we get a palindrome (28944982).

The spelling of 18222701 in words is "eighteen million, two hundred twenty-two thousand, seven hundred one".