1850211081 has 12 divisors (see below), whose sum is σ = 2710169280. Its totient is φ = 1216100760.

The previous prime is 1850211043. The next prime is 1850211101. The reversal of 1850211081 is 1801120581.

It is not a de Polignac number, because 1850211081 - 2¹⁰ = 1850210057 is a prime.

It is a super-3 number, since 3×1850211081³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1850211001) 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, 1447101 + ... + 1448378.

It is an arithmetic number, because the mean of its divisors is an integer number (225847440).

Almost surely, 2^1850211081 is an apocalyptic number.

It is an amenable number.

1850211081 is a deficient number, since it is larger than the sum of its proper divisors (859958199).

1850211081 is a wasteful number, since it uses less digits than its factorization.

1850211081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895556 (or 2895553 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The square root of 1850211081 is about 43014.0800320081. The cubic root of 1850211081 is about 1227.6477132908.

The spelling of 1850211081 in words is "one billion, eight hundred fifty million, two hundred eleven thousand, eighty-one".