4000648133 has 2 divisors, whose sum is σ = 4000648134. Its totient is φ = 4000648132.

The previous prime is 4000648111. The next prime is 4000648153. The reversal of 4000648133 is 3318460004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4000183009 + 465124 = 63247^2 + 682^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000648133 - 2²² = 3996453829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4000648096 and 4000648105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000648153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000324066 + 2000324067.

It is an arithmetic number, because the mean of its divisors is an integer number (2000324067).

Almost surely, 2^4000648133 is an apocalyptic number.

It is an amenable number.

4000648133 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000648133 is an equidigital number, since it uses as much as digits as its factorization.

4000648133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 4000648133 is about 63250.6769370890. The cubic root of 4000648133 is about 1587.4867845884.

The spelling of 4000648133 in words is "four billion, six hundred forty-eight thousand, one hundred thirty-three".