19340818 has 8 divisors (see below), whose sum is σ = 33155712. Its totient is φ = 8288916.

The previous prime is 19340809. The next prime is 19340819. The reversal of 19340818 is 81804391.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (19340819) by changing a digit.

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, 690730 + ... + 690757.

It is an arithmetic number, because the mean of its divisors is an integer number (4144464).

Almost surely, 2^19340818 is an apocalyptic number.

19340818 is a deficient number, since it is larger than the sum of its proper divisors (13814894).

19340818 is a wasteful number, since it uses less digits than its factorization.

19340818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381496.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 19340818 is about 4397.8196870722. The cubic root of 19340818 is about 268.4262264272.

The spelling of 19340818 in words is "nineteen million, three hundred forty thousand, eight hundred eighteen".