16378803 has 48 divisors (see below), whose sum is σ = 29405376. Its totient is φ = 8570880.

The previous prime is 16378781. The next prime is 16378807. The reversal of 16378803 is 30887361.

It is not a de Polignac number, because 16378803 - 2⁵ = 16378771 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16378807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43725 + ... + 44097.

It is an arithmetic number, because the mean of its divisors is an integer number (612612).

Almost surely, 2^16378803 is an apocalyptic number.

16378803 is a deficient number, since it is larger than the sum of its proper divisors (13026573).

16378803 is a wasteful number, since it uses less digits than its factorization.

16378803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 16378803 is about 4047.0733870292. The cubic root of 16378803 is about 253.9573109071.

It can be divided in two parts, 1637 and 8803, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 16378803 in words is "sixteen million, three hundred seventy-eight thousand, eight hundred three".