1855003489836 has 96 divisors (see below), whose sum is σ = 5098583669760. Its totient is φ = 513969926400.

The previous prime is 1855003489819. The next prime is 1855003489877. The reversal of 1855003489836 is 6389843005581.

It is a self number, because there is not a number n which added to its sum of digits gives 1855003489836.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2185651 + ... + 2913258.

It is an arithmetic number, because the mean of its divisors is an integer number (53110246560).

Almost surely, 2^{1855003489836} is an apocalyptic number.

It is an amenable number.

1855003489836 is an abundant number, since it is smaller than the sum of its proper divisors (3243580179924).

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

1855003489836 is a wasteful number, since it uses less digits than its factorization.

1855003489836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099055 (or 5099053 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

The spelling of 1855003489836 in words is "one trillion, eight hundred fifty-five billion, three million, four hundred eighty-nine thousand, eight hundred thirty-six".