19862004816 has 50 divisors (see below), whose sum is σ = 57486408122. Its totient is φ = 6620667840.

The previous prime is 19862004803. The next prime is 19862004881. The reversal of 19862004816 is 61840026891.

19862004816 is a `hidden beast` number, since 1 + 9 + 8 + 620 + 0 + 4 + 8 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15114243600 + 4747761216 = 122940^2 + 68904^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 7661515 + ... + 7664106.

Almost surely, 2^19862004816 is an apocalyptic number.

19862004816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19862004816 is an abundant number, since it is smaller than the sum of its proper divisors (37624403306).

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

19862004816 is a wasteful number, since it uses less digits than its factorization.

19862004816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15325641 (or 15325626 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 19862004816 in words is "nineteen billion, eight hundred sixty-two million, four thousand, eight hundred sixteen".