18819796 has 12 divisors (see below), whose sum is σ = 34366752. Its totient is φ = 9000728.

The previous prime is 18819793. The next prime is 18819797. The reversal of 18819796 is 69791881.

18819796 = 874² + 875² + ... + 897².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18819793) 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 3 ways as a sum of consecutive naturals, for example, 102190 + ... + 102373.

It is an arithmetic number, because the mean of its divisors is an integer number (2863896).

Almost surely, 2^18819796 is an apocalyptic number.

It is an amenable number.

18819796 is a deficient number, since it is larger than the sum of its proper divisors (15546956).

18819796 is a wasteful number, since it uses less digits than its factorization.

18819796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204590 (or 204588 counting only the distinct ones).

The product of its digits is 217728, while the sum is 49.

The square root of 18819796 is about 4338.1788805903. The cubic root of 18819796 is about 265.9938755256.

The spelling of 18819796 in words is "eighteen million, eight hundred nineteen thousand, seven hundred ninety-six".