19140218 has 8 divisors (see below), whose sum is σ = 28855200. Its totient is φ = 9521820.

The previous prime is 19140197. The next prime is 19140221. The reversal of 19140218 is 81204191.

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

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, 23648 + ... + 24443.

It is an arithmetic number, because the mean of its divisors is an integer number (3606900).

Almost surely, 2^19140218 is an apocalyptic number.

19140218 is a deficient number, since it is larger than the sum of its proper divisors (9714982).

19140218 is a wasteful number, since it uses less digits than its factorization.

19140218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48292.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 19140218 is about 4374.9534854670. The cubic root of 19140218 is about 267.4949741391.

The spelling of 19140218 in words is "nineteen million, one hundred forty thousand, two hundred eighteen".