3868509276 has 72 divisors (see below), whose sum is σ = 10219233024. Its totient is φ = 1232693280.

The previous prime is 3868509247. The next prime is 3868509287. The reversal of 3868509276 is 6729058683.

It is a happy number.

3868509276 is a `hidden beast` number, since 3 + 8 + 68 + 509 + 2 + 76 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46171 + ... + 99341.

It is an arithmetic number, because the mean of its divisors is an integer number (141933792).

Almost surely, 2^3868509276 is an apocalyptic number.

3868509276 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3868509276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5109616512).

3868509276 is an abundant number, since it is smaller than the sum of its proper divisors (6350723748).

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

3868509276 is a wasteful number, since it uses less digits than its factorization.

3868509276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53271 (or 53266 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 3868509276 is about 62197.3413901270. The cubic root of 3868509276 is about 1569.8128539420.

The spelling of 3868509276 in words is "three billion, eight hundred sixty-eight million, five hundred nine thousand, two hundred seventy-six".