16378818 has 8 divisors (see below), whose sum is σ = 32757648. Its totient is φ = 5459604.

The previous prime is 16378807. The next prime is 16378849. The reversal of 16378818 is 81887361.

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

16378818 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 16378818.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364896 + ... + 1364907.

It is an arithmetic number, because the mean of its divisors is an integer number (4094706).

Almost surely, 2^16378818 is an apocalyptic number.

16378818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16378818 is a wasteful number, since it uses less digits than its factorization.

16378818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729808.

The product of its digits is 64512, while the sum is 42.

The square root of 16378818 is about 4047.0752402198. The cubic root of 16378818 is about 253.9573884333.

The spelling of 16378818 in words is "sixteen million, three hundred seventy-eight thousand, eight hundred eighteen".