18641022 has 8 divisors (see below), whose sum is σ = 37282056. Its totient is φ = 6213672.

The previous prime is 18641011. The next prime is 18641039. The reversal of 18641022 is 22014681.

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

18641022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 18640983 and 18641001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553413 + ... + 1553424.

It is an arithmetic number, because the mean of its divisors is an integer number (4660257).

Almost surely, 2^18641022 is an apocalyptic number.

18641022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18641022 is a wasteful number, since it uses less digits than its factorization.

18641022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106842.

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

The square root of 18641022 is about 4317.5249854517. The cubic root of 18641022 is about 265.1489467640.

The spelling of 18641022 in words is "eighteen million, six hundred forty-one thousand, twenty-two".