1818365783810 has 8 divisors (see below), whose sum is σ = 3273058410876. Its totient is φ = 727346313520.

The previous prime is 1818365783809. The next prime is 1818365783821. The reversal of 1818365783810 is 183875638181.

It can be written as a sum of positive squares in 2 ways, for example, as 1664252223481 + 154113560329 = 1290059^2 + 392573^2 .

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

It is a super-2 number, since 2×1818365783810² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1818365783810.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90918289181 + ... + 90918289200.

Almost surely, 2^{1818365783810} is an apocalyptic number.

1818365783810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1818365783810 is a deficient number, since it is larger than the sum of its proper divisors (1454692627066).

1818365783810 is a wasteful number, since it uses less digits than its factorization.

1818365783810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181836578388.

The product of its (nonzero) digits is 7741440, while the sum is 59.

The spelling of 1818365783810 in words is "one trillion, eight hundred eighteen billion, three hundred sixty-five million, seven hundred eighty-three thousand, eight hundred ten".