3866066138 has 16 divisors (see below), whose sum is σ = 6497272224. Its totient is φ = 1709807760.

The previous prime is 3866066131. The next prime is 3866066153. The reversal of 3866066138 is 8316606683.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3866066092 and 3866066101.

It is not an unprimeable number, because it can be changed into a prime (3866066131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2373920 + ... + 2375547.

It is an arithmetic number, because the mean of its divisors is an integer number (406079514).

Almost surely, 2^3866066138 is an apocalyptic number.

3866066138 is a deficient number, since it is larger than the sum of its proper divisors (2631206086).

3866066138 is a wasteful number, since it uses less digits than its factorization.

3866066138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749517.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 3866066138 is about 62177.6980757570. The cubic root of 3866066138 is about 1569.4823151541.

The spelling of 3866066138 in words is "three billion, eight hundred sixty-six million, sixty-six thousand, one hundred thirty-eight".