3866808372 has 96 divisors (see below), whose sum is σ = 11020520448. Its totient is φ = 1030055424.

The previous prime is 3866808367. The next prime is 3866808373. The reversal of 3866808372 is 2738086683.

3866808372 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866808373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140143 + ... + 165449.

It is an arithmetic number, because the mean of its divisors is an integer number (114797088).

Almost surely, 2^3866808372 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 3866808372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5510260224).

3866808372 is an abundant number, since it is smaller than the sum of its proper divisors (7153712076).

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

3866808372 is a wasteful number, since it uses less digits than its factorization.

3866808372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25445 (or 25443 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 3866808372 is about 62183.6664406337. Note that the first 3 decimals coincide. The cubic root of 3866808372 is about 1569.5827487347.

The spelling of 3866808372 in words is "three billion, eight hundred sixty-six million, eight hundred eight thousand, three hundred seventy-two".