18719350 has 48 divisors (see below), whose sum is σ = 38747520. Its totient is φ = 6681600.

The previous prime is 18719341. The next prime is 18719353. The reversal of 18719350 is 5391781.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18719353) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19686 + ... + 20614.

It is an arithmetic number, because the mean of its divisors is an integer number (807240).

Almost surely, 2^18719350 is an apocalyptic number.

18719350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18719350 is an abundant number, since it is smaller than the sum of its proper divisors (20028170).

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

18719350 is a wasteful number, since it uses less digits than its factorization.

18719350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 18719350 is about 4326.5864142532. The cubic root of 18719350 is about 265.5198056353.

The spelling of 18719350 in words is "eighteen million, seven hundred nineteen thousand, three hundred fifty".