2018685351850 has 24 divisors (see below), whose sum is σ = 3755537278668. Its totient is φ = 807305856000.

The previous prime is 2018685351821. The next prime is 2018685351853. The reversal of 2018685351850 is 581535868102.

It can be written as a sum of positive squares in 6 ways, for example, as 780029875249 + 1238655476601 = 883193^2 + 1112949^2 .

It is not an unprimeable number, because it can be changed into a prime (2018685351853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3964669 + ... + 4444768.

Almost surely, 2^{2018685351850} is an apocalyptic number.

2018685351850 is a deficient number, since it is larger than the sum of its proper divisors (1736851926818).

2018685351850 is a wasteful number, since it uses less digits than its factorization.

2018685351850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414250 (or 8414245 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 52.

The spelling of 2018685351850 in words is "two trillion, eighteen billion, six hundred eighty-five million, three hundred fifty-one thousand, eight hundred fifty".