1800851222 has 8 divisors (see below), whose sum is σ = 2794424400. Its totient is φ = 869376424.

The previous prime is 1800851207. The next prime is 1800851233. The reversal of 1800851222 is 2221580081.

It is a happy number.

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

It is a super-3 number, since 3×1800851222³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 15524522 + ... + 15524637.

It is an arithmetic number, because the mean of its divisors is an integer number (349303050).

Almost surely, 2^1800851222 is an apocalyptic number.

1800851222 is a deficient number, since it is larger than the sum of its proper divisors (993573178).

1800851222 is a wasteful number, since it uses less digits than its factorization.

1800851222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31049190.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 1800851222 is about 42436.4374329420. The cubic root of 1800851222 is about 1216.6321209015.

The spelling of 1800851222 in words is "one billion, eight hundred million, eight hundred fifty-one thousand, two hundred twenty-two".