18409022 has 8 divisors (see below), whose sum is σ = 28002672. Its totient is φ = 9074800.

The previous prime is 18408991. The next prime is 18409033. The reversal of 18409022 is 22090481.

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

It is a junction number, because it is equal to n+sod(n) for n = 18408982 and 18409000.

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, 64679 + ... + 64962.

It is an arithmetic number, because the mean of its divisors is an integer number (3500334).

Almost surely, 2^18409022 is an apocalyptic number.

18409022 is a deficient number, since it is larger than the sum of its proper divisors (9593650).

18409022 is a wasteful number, since it uses less digits than its factorization.

18409022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129714.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18409022 is about 4290.5736213238. The cubic root of 18409022 is about 264.0443662045.

The spelling of 18409022 in words is "eighteen million, four hundred nine thousand, twenty-two".