1818503485 has 8 divisors (see below), whose sum is σ = 2203810776. Its totient is φ = 1440398400.

The previous prime is 1818503483. The next prime is 1818503507. The reversal of 1818503485 is 5843058181.

It can be written as a sum of positive squares in 4 ways, for example, as 503643364 + 1314860121 = 22442^2 + 36261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1818503485 - 2¹ = 1818503483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818503483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1799994 + ... + 1801003.

It is an arithmetic number, because the mean of its divisors is an integer number (275476347).

Almost surely, 2^1818503485 is an apocalyptic number.

It is an amenable number.

1818503485 is a deficient number, since it is larger than the sum of its proper divisors (385307291).

1818503485 is a wasteful number, since it uses less digits than its factorization.

1818503485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601103.

The product of its (nonzero) digits is 153600, while the sum is 43.

The square root of 1818503485 is about 42643.9149820933. The cubic root of 1818503485 is about 1220.5944171808.

The spelling of 1818503485 in words is "one billion, eight hundred eighteen million, five hundred three thousand, four hundred eighty-five".