318646134533 has 2 divisors, whose sum is σ = 318646134534. Its totient is φ = 318646134532.

The previous prime is 318646134491. The next prime is 318646134647. The reversal of 318646134533 is 335431646813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210219499009 + 108426635524 = 458497^2 + 329282^2 .

It is a cyclic number.

It is not a de Polignac number, because 318646134533 - 2¹² = 318646130437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318646134133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159323067266 + 159323067267.

It is an arithmetic number, because the mean of its divisors is an integer number (159323067267).

Almost surely, 2^318646134533 is an apocalyptic number.

It is an amenable number.

318646134533 is a deficient number, since it is larger than the sum of its proper divisors (1).

318646134533 is an equidigital number, since it uses as much as digits as its factorization.

318646134533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 47.

The spelling of 318646134533 in words is "three hundred eighteen billion, six hundred forty-six million, one hundred thirty-four thousand, five hundred thirty-three".