18622461 has 32 divisors (see below), whose sum is σ = 29578752. Its totient is φ = 10272960.

The previous prime is 18622459. The next prime is 18622469. The reversal of 18622461 is 16422681.

It is not a de Polignac number, because 18622461 - 2¹ = 18622459 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18622469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35346 + ... + 35868.

It is an arithmetic number, because the mean of its divisors is an integer number (924336).

Almost surely, 2^18622461 is an apocalyptic number.

18622461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18622461 is a deficient number, since it is larger than the sum of its proper divisors (10956291).

18622461 is a wasteful number, since it uses less digits than its factorization.

18622461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its digits is 4608, while the sum is 30.

The square root of 18622461 is about 4315.3749547403. The cubic root of 18622461 is about 265.0609139666.

The spelling of 18622461 in words is "eighteen million, six hundred twenty-two thousand, four hundred sixty-one".