1816498803 has 16 divisors (see below), whose sum is σ = 2768860160. Its totient is φ = 1037676096.

The previous prime is 1816498787. The next prime is 1816498829. The reversal of 1816498803 is 3088946181.

It is not a de Polignac number, because 1816498803 - 2⁴ = 1816498787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1816498883) 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, 66663 + ... + 89871.

It is an arithmetic number, because the mean of its divisors is an integer number (173053760).

Almost surely, 2^1816498803 is an apocalyptic number.

1816498803 is a deficient number, since it is larger than the sum of its proper divisors (952361357).

1816498803 is a wasteful number, since it uses less digits than its factorization.

1816498803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26946.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 1816498803 is about 42620.4035996845. The cubic root of 1816498803 is about 1220.1457326135.

The spelling of 1816498803 in words is "one billion, eight hundred sixteen million, four hundred ninety-eight thousand, eight hundred three".