819200002 has 4 divisors (see below), whose sum is σ = 1228800006. Its totient is φ = 409600000.

The previous prime is 819199973. The next prime is 819200003. The reversal of 819200002 is 200002918.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 460059601 + 359140401 = 21449^2 + 18951^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (819200003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204799999 + ... + 204800002.

Almost surely, 2^819200002 is an apocalyptic number.

819200002 is a deficient number, since it is larger than the sum of its proper divisors (409600004).

819200002 is a wasteful number, since it uses less digits than its factorization.

819200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409600003.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 819200002 is about 28621.6701469359. The cubic root of 819200002 is about 935.6856769896.

It can be divided in two parts, 81920000 and 2, that multiplied together give a square (163840000 = 12800²).

The spelling of 819200002 in words is "eight hundred nineteen million, two hundred thousand, two".