853856154 has 40 divisors (see below), whose sum is σ = 1920181428. Its totient is φ = 283590720.

The previous prime is 853856131. The next prime is 853856183. The reversal of 853856154 is 451658358.

853856154 is a `hidden beast` number, since 8 + 5 + 38 + 561 + 54 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 837234225 + 16621929 = 28935^2 + 4077^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36144 + ... + 54900.

Almost surely, 2^853856154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853856154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960090714).

853856154 is an abundant number, since it is smaller than the sum of its proper divisors (1066325274).

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

853856154 is a wasteful number, since it uses less digits than its factorization.

853856154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19052 (or 19043 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 853856154 is about 29220.8171343650. The cubic root of 853856154 is about 948.6985517884.

The spelling of 853856154 in words is "eight hundred fifty-three million, eight hundred fifty-six thousand, one hundred fifty-four".