7285318133 has 2 divisors, whose sum is σ = 7285318134. Its totient is φ = 7285318132.

The previous prime is 7285318081. The next prime is 7285318141. The reversal of 7285318133 is 3318135827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7163591044 + 121727089 = 84638^2 + 11033^2 .

It is a cyclic number.

It is not a de Polignac number, because 7285318133 - 2³² = 2990350837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7285518133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3642659066 + 3642659067.

It is an arithmetic number, because the mean of its divisors is an integer number (3642659067).

Almost surely, 2^7285318133 is an apocalyptic number.

It is an amenable number.

7285318133 is a deficient number, since it is larger than the sum of its proper divisors (1).

7285318133 is an equidigital number, since it uses as much as digits as its factorization.

7285318133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 7285318133 is about 85354.0750813926. The cubic root of 7285318133 is about 1938.5760384444.

The spelling of 7285318133 in words is "seven billion, two hundred eighty-five million, three hundred eighteen thousand, one hundred thirty-three".