1818685660528 has 40 divisors (see below), whose sum is σ = 3844162640880. Its totient is φ = 826648957440.

The previous prime is 1818685660511. The next prime is 1818685660733. The reversal of 1818685660528 is 8250665868181.

It is a self number, because there is not a number n which added to its sum of digits gives 1818685660528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6035626 + ... + 6329782.

It is an arithmetic number, because the mean of its divisors is an integer number (96104066022).

Almost surely, 2^{1818685660528} is an apocalyptic number.

It is an amenable number.

1818685660528 is an abundant number, since it is smaller than the sum of its proper divisors (2025476980352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1818685660528 is a wasteful number, since it uses less digits than its factorization.

1818685660528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329305 (or 329299 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 64.

The spelling of 1818685660528 in words is "one trillion, eight hundred eighteen billion, six hundred eighty-five million, six hundred sixty thousand, five hundred twenty-eight".