3855180816 has 60 divisors (see below), whose sum is σ = 10798763820. Its totient is φ = 1283915520.

The previous prime is 3855180809. The next prime is 3855180821. The reversal of 3855180816 is 6180815583.

3855180816 is a `hidden beast` number, since 3 + 8 + 551 + 80 + 8 + 16 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3650576400 + 204604416 = 60420^2 + 14304^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158730 + ... + 181398.

It is an arithmetic number, because the mean of its divisors is an integer number (179979397).

Almost surely, 2^3855180816 is an apocalyptic number.

3855180816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3855180816 is an abundant number, since it is smaller than the sum of its proper divisors (6943583004).

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

3855180816 is a wasteful number, since it uses less digits than its factorization.

3855180816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23864 (or 23855 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 3855180816 is about 62090.1023996579. The cubic root of 3855180816 is about 1568.0079154987.

The spelling of 3855180816 in words is "three billion, eight hundred fifty-five million, one hundred eighty thousand, eight hundred sixteen".