1854165222 has 128 divisors (see below), whose sum is σ = 5195473920. Its totient is φ = 477031680.

The previous prime is 1854165221. The next prime is 1854165233. The reversal of 1854165222 is 2225614581.

1854165222 is a `hidden beast` number, since 18 + 5 + 416 + 5 + 222 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1854165221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 196873 + ... + 206075.

It is an arithmetic number, because the mean of its divisors is an integer number (40589640).

Almost surely, 2^1854165222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1854165222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2597736960).

1854165222 is an abundant number, since it is smaller than the sum of its proper divisors (3341308698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1854165222 is a wasteful number, since it uses less digits than its factorization.

1854165222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275 (or 9269 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 1854165222 is about 43060.0188341807. The cubic root of 1854165222 is about 1228.5216384738.

The spelling of 1854165222 in words is "one billion, eight hundred fifty-four million, one hundred sixty-five thousand, two hundred twenty-two".