18922030 has 8 divisors (see below), whose sum is σ = 34059672. Its totient is φ = 7568808.

The previous prime is 18922019. The next prime is 18922049. The reversal of 18922030 is 3022981.

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 = 18921986 and 18922004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946092 + ... + 946111.

It is an arithmetic number, because the mean of its divisors is an integer number (4257459).

Almost surely, 2^18922030 is an apocalyptic number.

18922030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18922030 is a deficient number, since it is larger than the sum of its proper divisors (15137642).

18922030 is a wasteful number, since it uses less digits than its factorization.

18922030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892210.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 18922030 is about 4349.9459766760. The cubic root of 18922030 is about 266.4746551794.

The spelling of 18922030 in words is "eighteen million, nine hundred twenty-two thousand, thirty".