1818963085449 has 8 divisors (see below), whose sum is σ = 2425307869152. Its totient is φ = 1212630179360.

The previous prime is 1818963085439. The next prime is 1818963085487. The reversal of 1818963085449 is 9445803698181.

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

It is a cyclic number.

It is not a de Polignac number, because 1818963085449 - 2¹⁷ = 1818962954377 is a prime.

It is a super-2 number, since 2×1818963085449² (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 1818963085449.

It is not an unprimeable number, because it can be changed into a prime (1818963085439) 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, 2605707 + ... + 3229184.

It is an arithmetic number, because the mean of its divisors is an integer number (303163483644).

Almost surely, 2^{1818963085449} is an apocalyptic number.

It is an amenable number.

1818963085449 is a deficient number, since it is larger than the sum of its proper divisors (606344783703).

1818963085449 is a wasteful number, since it uses less digits than its factorization.

1818963085449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938807.

The product of its (nonzero) digits is 59719680, while the sum is 66.

The spelling of 1818963085449 in words is "one trillion, eight hundred eighteen billion, nine hundred sixty-three million, eighty-five thousand, four hundred forty-nine".