18219010 has 16 divisors (see below), whose sum is σ = 33852672. Its totient is φ = 7052400.

The previous prime is 18219001. The next prime is 18219017. The reversal of 18219010 is 1091281.

It is not an unprimeable number, because it can be changed into a prime (18219017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29076 + ... + 29695.

It is an arithmetic number, because the mean of its divisors is an integer number (2115792).

Almost surely, 2^18219010 is an apocalyptic number.

18219010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18219010 is a deficient number, since it is larger than the sum of its proper divisors (15633662).

18219010 is a wasteful number, since it uses less digits than its factorization.

18219010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58809.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 18219010 is about 4268.3732264178. The cubic root of 18219010 is about 263.1327622244.

The spelling of 18219010 in words is "eighteen million, two hundred nineteen thousand, ten".