855045816 has 64 divisors (see below), whose sum is σ = 2198357280. Its totient is φ = 276971520.

The previous prime is 855045803. The next prime is 855045833. The reversal of 855045816 is 618540558.

It is a super-2 number, since 2×855045816² = 1462206694918211712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271000 + ... + 274136.

Almost surely, 2^855045816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855045816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099178640).

855045816 is an abundant number, since it is smaller than the sum of its proper divisors (1343311464).

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

855045816 is a wasteful number, since it uses less digits than its factorization.

855045816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The square root of 855045816 is about 29241.1664610015. The cubic root of 855045816 is about 949.1389487061.

The spelling of 855045816 in words is "eight hundred fifty-five million, forty-five thousand, eight hundred sixteen".