18022461 has 8 divisors (see below), whose sum is σ = 24588960. Its totient is φ = 11735472.

The previous prime is 18022453. The next prime is 18022463. The reversal of 18022461 is 16422081.

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

It is not a de Polignac number, because 18022461 - 2³ = 18022453 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 (18022463) 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, 69726 + ... + 69983.

It is an arithmetic number, because the mean of its divisors is an integer number (3073620).

Almost surely, 2^18022461 is an apocalyptic number.

It is an amenable number.

18022461 is a deficient number, since it is larger than the sum of its proper divisors (6566499).

18022461 is a wasteful number, since it uses less digits than its factorization.

18022461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139755.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18022461 is about 4245.2869160988. The cubic root of 18022461 is about 262.1831023932.

The spelling of 18022461 in words is "eighteen million, twenty-two thousand, four hundred sixty-one".