1998000499 has 32 divisors (see below), whose sum is σ = 2377728000. Its totient is φ = 1658685600.

The previous prime is 1998000493. The next prime is 1998000509. The reversal of 1998000499 is 9940008991.

It is not a de Polignac number, because 1998000499 - 2⁵ = 1998000467 is a prime.

It is a super-4 number, since 4×1998000499⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1998000493) 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 in 31 ways as a sum of consecutive naturals, for example, 2325532 + ... + 2326390.

It is an arithmetic number, because the mean of its divisors is an integer number (74304000).

Almost surely, 2^1998000499 is an apocalyptic number.

1998000499 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1998000499 is a deficient number, since it is larger than the sum of its proper divisors (379727501).

1998000499 is a wasteful number, since it uses less digits than its factorization.

1998000499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 1998000499 is about 44698.9988590349. The cubic root of 1998000499 is about 1259.5010409959.

The spelling of 1998000499 in words is "one billion, nine hundred ninety-eight million, four hundred ninety-nine", and thus it is an aban number.