3851655120 has 60 divisors (see below), whose sum is σ = 12935144196. Its totient is φ = 1027107840.

The previous prime is 3851655079. The next prime is 3851655131. The reversal of 3851655120 is 215561583.

It is a happy number.

3851655120 is a `hidden beast` number, since 3 + 85 + 1 + 6 + 551 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2187994176 + 1663660944 = 46776^2 + 40788^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 2674041 + ... + 2675480.

Almost surely, 2^3851655120 is an apocalyptic number.

3851655120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3851655120 is an abundant number, since it is smaller than the sum of its proper divisors (9083489076).

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

3851655120 is a wasteful number, since it uses less digits than its factorization.

3851655120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5349540 (or 5349531 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 3851655120 is about 62061.7041338699. The cubic root of 3851655120 is about 1567.5297705784.

It can be divided in two parts, 38516 and 55120, that added together give a square (93636 = 306²).

The spelling of 3851655120 in words is "three billion, eight hundred fifty-one million, six hundred fifty-five thousand, one hundred twenty".