4638139012 has 48 divisors (see below), whose sum is σ = 9069182640. Its totient is φ = 2060771328.

The previous prime is 4638139003. The next prime is 4638139013. The reversal of 4638139012 is 2109318364.

It can be written as a sum of positive squares in 8 ways, for example, as 27185796 + 4610953216 = 5214^2 + 67904^2 .

It is a super-2 number, since 2×4638139012² = 43024666989272672288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4638139013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527968 + ... + 536680.

It is an arithmetic number, because the mean of its divisors is an integer number (188941305).

Almost surely, 2^4638139012 is an apocalyptic number.

It is an amenable number.

4638139012 is a deficient number, since it is larger than the sum of its proper divisors (4431043628).

4638139012 is a wasteful number, since it uses less digits than its factorization.

4638139012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9112 (or 9110 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 4638139012 is about 68103.8839714740. The cubic root of 4638139012 is about 1667.6871675703.

The spelling of 4638139012 in words is "four billion, six hundred thirty-eight million, one hundred thirty-nine thousand, twelve".