19999902203 has 2 divisors, whose sum is σ = 19999902204. Its totient is φ = 19999902202.

The previous prime is 19999902107. The next prime is 19999902239. The reversal of 19999902203 is 30220999991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19999902203 - 2⁸ = 19999901947 is a prime.

It is not a weakly prime, because it can be changed into another prime (19999902253) 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 as a sum of consecutive naturals, namely, 9999951101 + 9999951102.

It is an arithmetic number, because the mean of its divisors is an integer number (9999951102).

Almost surely, 2^19999902203 is an apocalyptic number.

19999902203 is a deficient number, since it is larger than the sum of its proper divisors (1).

19999902203 is an equidigital number, since it uses as much as digits as its factorization.

19999902203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 708588, while the sum is 53.

The spelling of 19999902203 in words is "nineteen billion, nine hundred ninety-nine million, nine hundred two thousand, two hundred three".