3866155580 has 24 divisors (see below), whose sum is σ = 9278773728. Its totient is φ = 1325539008.

The previous prime is 3866155577. The next prime is 3866155637. The reversal of 3866155580 is 855516683.

It is a super-3 number, since 3×3866155580³ (a number of 30 digits) contains 333 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13807559 + ... + 13807838.

It is an arithmetic number, because the mean of its divisors is an integer number (386615572).

Almost surely, 2^3866155580 is an apocalyptic number.

It is an amenable number.

3866155580 is an abundant number, since it is smaller than the sum of its proper divisors (5412618148).

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

3866155580 is a wasteful number, since it uses less digits than its factorization.

3866155580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27615413 (or 27615411 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The square root of 3866155580 is about 62178.4173166220. The cubic root of 3866155580 is about 1569.4944184610.

The spelling of 3866155580 in words is "three billion, eight hundred sixty-six million, one hundred fifty-five thousand, five hundred eighty".