1855018436 has 12 divisors (see below), whose sum is σ = 3248441280. Its totient is φ = 926892360.

The previous prime is 1855018423. The next prime is 1855018457. The reversal of 1855018436 is 6348105581.

It is a junction number, because it is equal to n+sod(n) for n = 1855018393 and 1855018402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147416 + ... + 159503.

It is an arithmetic number, because the mean of its divisors is an integer number (270703440).

Almost surely, 2^1855018436 is an apocalyptic number.

It is an amenable number.

1855018436 is a deficient number, since it is larger than the sum of its proper divisors (1393422844).

1855018436 is a wasteful number, since it uses less digits than its factorization.

1855018436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308434 (or 308432 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 1855018436 is about 43069.9249593031. The cubic root of 1855018436 is about 1228.7100487102.

The spelling of 1855018436 in words is "one billion, eight hundred fifty-five million, eighteen thousand, four hundred thirty-six".