218902093357 has 2 divisors, whose sum is σ = 218902093358. Its totient is φ = 218902093356.

The previous prime is 218902093343. The next prime is 218902093373. The reversal of 218902093357 is 753390209812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172433393001 + 46468700356 = 415251^2 + 215566^2 .

It is a cyclic number.

It is not a de Polignac number, because 218902093357 - 2³⁵ = 184542354989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218902093357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218902093757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109451046678 + 109451046679.

It is an arithmetic number, because the mean of its divisors is an integer number (109451046679).

Almost surely, 2^218902093357 is an apocalyptic number.

It is an amenable number.

218902093357 is a deficient number, since it is larger than the sum of its proper divisors (1).

218902093357 is an equidigital number, since it uses as much as digits as its factorization.

218902093357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 218902093357 in words is "two hundred eighteen billion, nine hundred two million, ninety-three thousand, three hundred fifty-seven".