1998741803 has 16 divisors (see below), whose sum is σ = 2143065600. Its totient is φ = 1858570560.

The previous prime is 1998741779. The next prime is 1998741839. The reversal of 1998741803 is 3081478991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1998741803 is a prime.

It is a super-3 number, since 3×1998741803³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1998741863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311138 + ... + 317496.

It is an arithmetic number, because the mean of its divisors is an integer number (133941600).

Almost surely, 2^1998741803 is an apocalyptic number.

1998741803 is a deficient number, since it is larger than the sum of its proper divisors (144323797).

1998741803 is a wasteful number, since it uses less digits than its factorization.

1998741803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6682.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1998741803 is about 44707.2902668010. The cubic root of 1998741803 is about 1259.6567896577.

The spelling of 1998741803 in words is "one billion, nine hundred ninety-eight million, seven hundred forty-one thousand, eight hundred three".