1850385220018 has 8 divisors (see below), whose sum is σ = 2775583878912. Its totient is φ = 925190593716.

The previous prime is 1850385219971. The next prime is 1850385220027. The reversal of 1850385220018 is 8100225830581.

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

It is a super-2 number, since 2×1850385220018² (a number of 25 digits) contains 22 as substring.

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, 757371 + ... + 2067457.

It is an arithmetic number, because the mean of its divisors is an integer number (346947984864).

Almost surely, 2^{1850385220018} is an apocalyptic number.

1850385220018 is a deficient number, since it is larger than the sum of its proper divisors (925198658894).

1850385220018 is a wasteful number, since it uses less digits than its factorization.

1850385220018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016296.

The product of its (nonzero) digits is 153600, while the sum is 43.

The spelling of 1850385220018 in words is "one trillion, eight hundred fifty billion, three hundred eighty-five million, two hundred twenty thousand, eighteen".