4138625566 has 16 divisors (see below), whose sum is σ = 6490272384. Its totient is φ = 1975546584.

The previous prime is 4138625539. The next prime is 4138625599. The reversal of 4138625566 is 6655268314.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61956 + ... + 110071.

It is an arithmetic number, because the mean of its divisors is an integer number (405642024).

Almost surely, 2^4138625566 is an apocalyptic number.

4138625566 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

4138625566 is a deficient number, since it is larger than the sum of its proper divisors (2351646818).

4138625566 is a wasteful number, since it uses less digits than its factorization.

4138625566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172575.

The product of its digits is 1036800, while the sum is 46.

The square root of 4138625566 is about 64332.1503293649. The cubic root of 4138625566 is about 1605.5310614731.

The spelling of 4138625566 in words is "four billion, one hundred thirty-eight million, six hundred twenty-five thousand, five hundred sixty-six".